{"title":"HRD","description":"","products":[{"product_id":"hrd-vacuum-block-v1","title":"HRD Modular Vacuum Block (Universal)","description":"\u003cp\u003eVacuum lines on a turbocharged or supercharged setup can turn into an unorganized mess fast. The HRD Modular Vacuum Block features four ports, allowing for easy organization of your vacuum and boost reference for your turbocharger, blow-off-valve, wastegate, fuel pressure regulator, or other accessories. Securely fasten this component with ease to your car's engine bay with the included titanium M6 bolt.\u003c\/p\u003e\n\u003cp\u003eWhen installing the HRD Modular Vacuum Block on a Honda K-series setup, you can conveniently bolt it directly onto the RBC intake manifold, under the throttle body.\u003c\/p\u003e\n\u003cp\u003eThis vacuum block is precision machined out of an extremely strong 7075-T6 aluminum alloy, and anodized in HRD Midnight Navy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModularity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA modular vacuum block consolidates multiple vacuum or boost signal lines into a single, organized unit. This reduces the need for separate fittings, T-connectors, or complex routing, simplifying the engine bay layout. It ensures all components requiring vacuum or boost pressure, such as boost controllers, fuel pressure regulators, blow-off valves, and gauges, have a reliable and consistent source of pressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecise Pressure Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA vacuum block ensures consistent and even distribution of vacuum or boost pressure to all connected components. This is crucial for performance-critical devices such as boost controllers and fuel regulators that depend on stable signals. It eliminates pressure fluctuations that can arise from poorly routed or overly long vacuum lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEase of Maintenance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHaving a central hub makes it easier to inspect, troubleshoot, or replace individual vacuum lines or components. This reduces downtime during maintenance or future upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAesthetics Forward\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HRD Modular Vacuum Block contributes to a clean and professional-looking engine bay by eliminating the clutter of disorganized hoses and fittings. This is especially important for show cars or builds where presentation is as important as performance. Let form meet function.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded in Package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHRD Modular Vacuum Block\u003c\/li\u003e\n\u003cli\u003e1x M6x18 Titanium Bolt\u003c\/li\u003e\n\u003cli\u003e1x 8mm Festo Push Connect Fitting\u003c\/li\u003e\n\u003cli\u003e2x 6mm Festo Push Connect Fitting\u003c\/li\u003e\n\u003cli\u003e2x Stainless Steel 1\/8\" NPT Plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional push-connect fittings are available and sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Modular Vacuum Blocks are covered under a lifetime limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366144647262,"sku":"HRD-VAC-01","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD-VAC1.jpg?v=1769683865"},{"product_id":"b-k-series-mainshaft-thrust-tool","title":"HRD Mainshaft Thrust Measurement Tool for Honda B\/K Series","description":"\u003cp\u003eIntroducing the HRD Honda B\/K series Mainshaft Thrust Measurement Tool, an essential companion for transmission rebuilding.\u003c\/p\u003e\n\u003cp\u003eThis tool allows you to accurately measure the main shaft thrust on your Honda's B or K series transmission, which is mandatory when swapping gearsets, especially on high-power builds with aftermarket gear sets. This is a must-have for any DIY transmission builder or professional mechanic.\u003c\/p\u003e\n\u003cp\u003eThis tool is both CAD designed and machined in-house from an extremely strong 7075-T6 alloy aluminum. The clamps are bead blasted and anodized HRD Midnight Navy with type II anodizing, providing both an attractive finish and added protection against wear and tear. Titanium hardware is also included with the tool.\u003c\/p\u003e\n\u003cp\u003ePlease note that the dial indicator shown in the pictures is not included with our HRD Honda B\/K Series Mainshaft Thrust Measurement Tool.\u003c\/p\u003e\n\u003cp\u003eNotably, our mainshaft thrust measurement tool is fully compatible with B series and K series transmissions, ensuring broad compatibility across a wide range of transmission models for any Honda enthusiast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCrafted from 7075 Aluminum\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e7075-T6 aluminum has a significantly higher tensile strength (about 74,000 psi) compared to 6061-T6 aluminum (about 42,000 psi). This superior strength makes 7075 better suited for tools subjected to high loads or stresses, such as those measuring mainshaft thrust, where precision under pressure is critical.\u003c\/p\u003e\n\u003cp\u003eThe increased stiffness of 7075 ensures minimal deformation during measurement, providing more accurate and repeatable results with each transmission rebuild you undergo.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImproved Wear Resistance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e7075 aluminum has higher hardness compared to 6061, which makes it more resistant to wear and abrasion. This is particularly important for a thrust measurement tool that may experience repeated contact with hard surfaces or components under significant pressure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensional Stability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDue to its higher strength and stiffness, 7075 maintains its shape and dimensions better than 6061 under load. For a precision tool, dimensional stability ensures consistent readings and minimizes the need for recalibration over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Honda B\/K Series Mainshaft Thrust Measurement Tools are covered under a lifetime limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366144712798,"sku":"HRD-HON-THRUST","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/Edit2.jpg?v=1769683955"},{"product_id":"pnp-iat-harness","title":"HRD Plug-and-Play IAT Harness for 2006-2015 Honda Civic Si","description":"\u003cp\u003eInstalling an IAT sensor onto your turbocharged 2006-2015 Honda Civic Si has never been easier, thanks to HRD's plug-and-play MAF IAT harness. Simply plug this into your MAF sensor and MAF plug, and then solder the IAT sensor\/plug directly onto the pigtail. No more needing to irreversibly cut away at your car's factory wiring harness. With HRD's plug-and-play solution you can reverse your setup without a hassle should you ever revert your car back to its stock configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2006-2011 Honda Civic Si (8th Generation)\u003c\/li\u003e\n\u003cli\u003e2012-2015 Honda Civic Si (9th Generation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x PnP IAT Harness (18awg Wire)\u003c\/li\u003e\n\u003cli\u003e1 x IAT pigtail (17\" 18awg Wire)\u003c\/li\u003e\n\u003cli\u003e2 x Marine Heat Shrink\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Plug-and-Play IAT Harnesses are covered under a lifetime limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366144811102,"sku":"HRD-HON-MAF","price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/14550_e4c6bc04-4e66-46b7-8a28-acbed9949b78.jpg?v=1769684000"},{"product_id":"9th-gen-si-thermal-gasket","title":"HRD PTFE Thermal Intake Manifold Gasket for 2012-2015 Honda Civic Si (K24Z7)","description":"\u003cp\u003eThe HRD PTFE Thermal Intake Manifold Gasket is a custom CNC cut gasket, made out of premium PTFE (Polytetrafluoroethylene), commonly known as Teflon. Compared to inferior thermoplastics, PTFE provides lower thermal conductivity and superior sealing ability.\u003c\/p\u003e\n\u003cp\u003eThis thermal gasket has been designed to work in conjunction with a coolant delete, such as from Tractuff. It also serves as a stencil when cutting your intake manifold so that you can achieve the perfect cut.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Heat Resistance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIntake manifold gaskets are exposed to high temperatures from the engine and intake air. PTFE can withstand extreme heat, typically up to 260°C (500°F) and even higher for short durations, without degrading or losing its integrity. This heat resistance ensures that the gasket maintains a reliable seal even under the most demanding conditions, such as during prolonged high-performance driving.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChemical Inertness\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePTFE is chemically inert, meaning it resists reacting with most substances, including automotive fluids such as gasoline, oil, and coolant. This property is critical for intake manifold gaskets, as they come into contact with various chemicals that can degrade traditional gasket materials over time. PTFE’s chemical stability extends the lifespan of the gasket, reducing the need for frequent replacements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLow Friction and Self-Lubrication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePTFE’s low coefficient of friction allows it to create an effective seal without excessive force. This reduces the risk of deformation or damage during installation and operation. Its self-lubricating nature also helps prevent wear over time, maintaining the integrity of the gasket’s seal and enhancing engine performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConformance and Flexibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePTFE is highly conformable, meaning it can easily adapt to uneven or imperfect surfaces. This characteristic is vital for intake manifold gaskets, as they must form a tight seal between the manifold and the cylinder head to prevent air and fluid leaks. PTFE’s flexibility ensures a secure fit, even in cases of minor imperfections in the mating surfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurability and Longevity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePTFE gaskets are highly resistant to wear, aging, and environmental factors such as UV light and ozone. These properties make them ideal for applications where reliability and long service life are essential, such as in high-performance or turbocharged engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Thermal Intake Manifold Gaskets are covered under a lifetime limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366144843870,"sku":"HRD-IMG-R40","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRDPTFEThermalIntakeManifoldGasketfor2012-2015HondaCivicSi_K24Z7.png?v=1769684059"},{"product_id":"hrd-rbc-throttle-body-adapter-plate","title":"HRD RBC Throttle Body Adapter Plate for 2012-2015 Honda Civic Si","description":"\u003cp\u003eThe OEM 2012-2015 Honda Civic Si (9th Generation) intake manifold has 3 vacuum ports. When installing an RBC intake manifold, you will find that there are only 2 ports available on the manifold. This adapter plate will provide you with the 3rd port necessary for installation, which is to be connected to your brake booster line. This kit also comes with an accessory 1\/8\" NPT hole which provides a boost reference for accessories such as a boost gauge, blow-off-valve, wastegate, or fuel pressure regulator. The HRD RBC Throttle Body Adapter Plate is precision machined out of 6061-T6 aluminum and anodized in HRD Midnight Navy for a durable and aesthetic finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Conductivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAluminum's thermal conductivity helps in managing heat transfer between the throttle body and intake manifold. While the spacer is designed to reduce heat soak, 6061 aluminum minimizes localized hotspots and ensures the spacer maintains structural integrity under varying temperature conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCorrosion Resistance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e6061 aluminum naturally resists corrosion due to the formation of a protective oxide layer. This is crucial for throttle body spacers, which are exposed to air, moisture, and fuel vapors in the engine compartment. Combined with our type II anodizing, enhanced corrosion resistance ensures longevity and consistent performance, even in harsh conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerfect Sealing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eParticularly effective in high-pressure environments, the compressive nature of O-rings allows them to maintain a seal even under fluctuating pressures, as they deform to fill gaps. High-performance O-rings also withstand extreme temperatures with ease.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded in Package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e6061-T6 Aluminum Adapter Plate\u003c\/li\u003e\n\u003cli\u003eCustom Molded O-Rings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware\u003c\/li\u003e\n\u003cli\u003e1x Stainless Steel Hose Fitting\u003c\/li\u003e\n\u003cli\u003e1x 1\/8\" NPT Plug\u003c\/li\u003e\n\u003cli\u003e1x 90° 8mm Quick Connect Fitting (For Turbo Lines)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Throttle Body Adapters are covered under a lifetime limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Antisieze recommended with use of Titanium hardware\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366144876638,"sku":"HRD-TB-01","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD-TB-011_d8eface7-c8b5-4da9-a6e1-007000998155.jpg?v=1769684078"},{"product_id":"hrd-spd-coilovers-97-01-honda-crv","title":"HRD Street Performance Coilovers for 1997-2001 Honda CRV","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41366147891294,"sku":"HRD-SPD-CRV96","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/97-01CRV-StraightFull_b8a62335-9a26-4727-915f-799074a0ff59.jpg?v=1767314489"},{"product_id":"hrd-street-performance-coilovers-for-2017-2021-honda-civic-type-r-fk8","title":"HRD Street Performance Coilovers for 2017-2021 Honda Civic Type R (FK8)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 9kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41398381150302,"sku":"HRD-SPD-FK8","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/FK8-FullSet_60ccdfdd-b294-4e8b-8533-5e593ed9f394.png?v=1769683609"},{"product_id":"hrd-street-performance-coilovers-for-2012-2015-honda-civic","title":"HRD Street Performance Coilovers for 2012-2015 Civic (Incl. 12-13 Si)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408132448350,"sku":"HRD-SPD-FBFG1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/SI-FullSetShort_34eb8320-f2e4-4530-acf7-76f4d0d88b52.png?v=1769683840"},{"product_id":"hrd-street-performance-coilovers-for-2022-honda-civic-type-r-fl5","title":"HRD Street Performance Coilovers for 2022+ Honda Civic Type R (FL5)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 9kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408140902494,"sku":"HRD-SPD-FL5","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/FK8-FullSet_60ccdfdd-b294-4e8b-8533-5e593ed9f394.png?v=1769683609"},{"product_id":"hrd-street-performance-coilovers-for-2014-2015-civic-si","title":"HRD Street Performance Coilovers for 2014-2015 Honda Civic Si","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408142311518,"sku":"HRD-SPD-FBFG2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/SI-FullSetShort_34eb8320-f2e4-4530-acf7-76f4d0d88b52.png?v=1769683840"},{"product_id":"hrd-street-performance-coilovers-for-2000-2003-honda-s2000","title":"HRD Street Performance Coilovers for 2000-2003 Honda AP1 S2000","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 9kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408153256030,"sku":"HRD-SPD-S2K1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2004-2009-honda-s2000","title":"HRD Street Performance Coilovers for 2004-2009 Honda AP2 S2000","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 9kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408154632286,"sku":"HRD-SPD-S2K2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2018-2022-honda-accord-1-5l","title":"HRD Street Performance Coilovers for 2018-2022 Honda Accord 1.5T (CV1)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 6kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408154959966,"sku":"HRD-SPD-MK10","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/18-22AccordFullSet_cfddac39-5703-463b-916d-28fce6adcd8f.png?v=1769668236"},{"product_id":"hrd-street-performance-coilovers-for-2017-2021-civic-si","title":"HRD Street Performance Coilovers for 2017-2021 Honda Civic Si (FC1\/FC3)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41408194609246,"sku":"HRD-SPD-FC1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/17-21SIStraightShot_f6a05f4a-9bcb-41ea-87af-d5028054aa2a.jpg?v=1767314620"},{"product_id":"hrd-street-performance-coilovers-for-2000-2006-bmw-e46-m3","title":"HRD Street Performance Coilovers for 2000-2006 BMW E46 M3","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 10kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417132703838,"sku":"HRD-SPD-E46M","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2007-2013-bmw-e92-m3","title":"HRD Street Performance Coilovers for 2007-2013 BMW E92 M3","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 12kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417133031518,"sku":"HRD-SPD-E92M","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2022-bmw-g8x-m3-m4","title":"HRD Street Performance Coilovers for 2022+ BMW G8X M3\/M4","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 14kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417133817950,"sku":"HRD-SPD-G8XM","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2003-2007-mitsubishi-lancer-evo-viii-ix","title":"HRD Street Performance Coilovers for 2003-2007 Mitsubishi Lancer Evo VIII\/IX","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417137356894,"sku":"HRD-SPD-EVO1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2008-2015-mitsubishi-lancer-evolution-x","title":"HRD Street Performance Coilovers for 2008-2015 Mitsubishi Lancer Evolution X","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417137848414,"sku":"HRD-SPD-EVO2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2015-2020-acura-tlx","title":"HRD Street Performance Coilovers for 2015-2020 Acura TLX","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417139486814,"sku":"HRD-SPD-TLX1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2021-acura-tlx-incl-type-s","title":"HRD Street Performance Coilovers for 2021+ Acura TLX (Incl. Type S)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 10kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417141092446,"sku":"HRD-SPD-TLX2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2022-acura-integra","title":"HRD Street Performance Coilovers for 2022+ Acura Integra","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417141682270,"sku":"HRD-SPD-INTG","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2005-2015-mazda-miata","title":"HRD Street Performance Coilovers for 2006-2015 Mazda Miata","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 4kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417148170334,"sku":"HRD-SPD-MX52","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2016-2025-mazda-miata","title":"HRD Street Performance Coilovers for 2016-2025 Mazda Miata","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 4kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417151152222,"sku":"HRD-SPD-MX51","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2003-2009-nissan-350z","title":"HRD Street Performance Coilovers for 2003-2009 Nissan 350Z (True Rear)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417152692318,"sku":"HRD-SPD-350ZT","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2009-2021-nissan-370z-true-rear","title":"HRD Street Performance Coilovers for 2009-2021 Nissan 370Z (True Rear)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417153904734,"sku":"HRD-SPD-370ZT","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2011-2014-subaru-wrx-sti-sedan","title":"HRD Street Performance Coilovers for 2011-2014 Subaru Impreza WRX STi Sedan","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417157836894,"sku":"HRD-SPD-GRSD","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2008-2014-subaru-wrx-sti-hatchback","title":"HRD Street Performance Coilovers for 2008-2014 Subaru Impreza WRX STi Hatchback","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417158787166,"sku":"HRD-SPD-GRHT","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2015-2021-subaru-wrx-sti","title":"HRD Street Performance Coilovers for 2015-2021 Subaru WRX\/STi","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417159573598,"sku":"HRD-SPD-VAWRX","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/FRS_BRZ-FullSet1-2_9c0dc650-f59f-4532-9ce8-43edd9db1de4.png?v=1769667392"},{"product_id":"hrd-street-performance-coilovers-for-2022-subaru-wrx","title":"HRD Street Performance Coilovers for 2022+ Subaru WRX (VB)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417162948702,"sku":"HRD-SPD-VBWRX","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/22_WRXFULL.png?v=1769667298"},{"product_id":"hrd-street-performance-coilovers-for-frs-brz-gr86","title":"HRD Street Performance Coilovers for 2013-2020 Scion FRS\/ Subaru BRZ \/ Toyota 86 (ZN6\/ZC6)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 6kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417166585950,"sku":"HRD-SPD-ZC6","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/FRS_BRZ-FullSet1-2_df12b37b-145f-4547-b2b0-de6c39c72e92.png?v=1769667249"},{"product_id":"hrd-street-performance-coilovers-for-2005-2007-subaru-wrx-sti","title":"HRD Street Performance Coilovers for 2005-2007 Subaru WRX STi","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417167274078,"sku":"HRD-SPD-GD2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2004-subaru-wrx-sti","title":"HRD Street Performance Coilovers for 2004 Subaru Impreza WRX STi","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417169436766,"sku":"HRD-SPD-GD1B","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2004-2007-subaru-impreza-wrx","title":"HRD Street Performance Coilovers for 2002-2007 Subaru Impreza WRX","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 5kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417170026590,"sku":"HRD-SPD-GD1A","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2016-2021-honda-civic","title":"HRD Street Performance Coilovers for 2016-2021 Honda Civic Coupe\/Sedan (Excl. Si)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417189589086,"sku":"HRD-SPD-FC2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2016-2021-honda-civic-hatchback","title":"HRD Street Performance Coilovers for 2016-2021 Honda Civic Hatchback","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417189851230,"sku":"HRD-SPD-FC3","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2022-honda-civic-si","title":"HRD Street Performance Coilovers for 2022+ Honda Civic Si","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417194242142,"sku":"HRD-SPD-FE","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2022-honda-civic-excl-si","title":"HRD Street Performance Coilovers for 2022+ Honda Civic (Excl. Si)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417204236382,"sku":"HRD-SPD-FE2","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/22_CivicFullSet_26fc945b-21c9-42ae-9ae0-a2c6944ca624.png?v=1769667191"},{"product_id":"hrd-street-performance-coilovers-for-1997-2013-chevrolet-corvette-c5-c6","title":"HRD Street Performance Coilovers for 1997-2013 Chevrolet Corvette C5\/C6","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 10kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417206530142,"sku":"HRD-SPD-C5C6","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/780_3937-Edit_06e7211f-f38d-4404-9c6a-e18808931569.jpg?v=1738371541"},{"product_id":"hrd-street-performance-coilovers-for-2015-2021-bmw-f8x-m3-m4","title":"HRD Street Performance Coilovers for 2015-2021 BMW F8X M3\/M4","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 14kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417208594526,"sku":"HRD-SPD-F8XM","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2019-2021-bmw-m2-competition-5-bolt","title":"HRD Street Performance Coilovers for 2019-2021 BMW M2 Competition (5-Bolt)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 14kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417209774174,"sku":"HRD-SPD-FM2C","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2021-toyota-gr-supra-a90","title":"HRD Street Performance Coilovers for 2021+ Toyota GR Supra (A90)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 8kg \/ Rear Spring Rate: 10kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417215541342,"sku":"HRD-SPD-A90","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/Supra-FullSet.png?v=1769666396"},{"product_id":"hrd-street-performance-coilovers-for-2022-toyota-gr-corolla","title":"HRD Street Performance Coilovers for 2022+ Toyota GR Corolla","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417217114206,"sku":"HRD-SPD-GRC","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-air-dampers-for-2022-subaru-wrx","title":"HRD AIR Dampers for 2015-2021 Subaru WRX","description":"\u003cp\u003eHRD AIR Dampers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance with dynamic ride height without disrupting the refinement of their ride quality. When paired with a management system, you will achieve fully pneumatically adjustable ride height, allowing you to dynamically change your ride height on demand. We believe that air suspension should feel just as performance oriented as properly configured traditional Dampers. That's why our HRD AIR Dampers were designed alongside our Street Performance Damper lineup with the goal of creating the ultimate air strut with no compromises.\u003c\/p\u003e\n\u003cp\u003eOur HRD AIR lineup is compatible with popular management kits such as the 3H and 3P offerings from Air Lift Performance. These management kits are available as an optional add on from HRD for enthusiasts seeking a complete install ready package. We recommend pairing our HRD AIR Dampers with the 3H or 3P kits from Air Lift due to their history of reliability, ease of install, and easy to use controller.\u003c\/p\u003e\n\u003cp\u003eEach set of our Dampers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Dampers in adverse climates. We've designed HRD AIR with all climates in mind, and we've taken steps to engineer solutions into each kit we manufacture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully Pneumatically Adjustable Ride Height\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAir suspension has come a long way as it has become more and more popular as an alternative to traditional coilover kits. While traditional coilover kits utilize a spring-on-damper to control weight transfer, air suspension replaces the conventional spring for a rubber air bag created out of a reinforced high-strength compound designed for durability and fatigue resistance. Instead of a spring providing resistance to your vehicles weight, with air suspension your bag fills with pressurized air.\u003c\/p\u003e\n\u003cp\u003eThis pressure is dynamic and controlled by your management system, with higher pressure raising your ride height, and lower pressure lowering your ride height. You can think of air suspension as an innovative solution to achieve variable and dynamic ride height on the fly, which is otherwise not achievable with traditional spring-on-damper coilover setups. We engineered our HRD AIR lineup alongside our Street Performance Dampers with the goal of creating an air suspension option with all of the performance of a properly configured coilover system, but with the added benefit of dynamic ride height.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility with Popular Management Kits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe recommend pairing a 3H or 3P management kit from Air Lift Performance with our HRD AIR Dampers. Most enthusiasts elect for the 3P option paired with 1\/4\" air lines, 4 gallon tank, and a single chrome Viair 444c compressor. With Air Lift management kits, you'll have easy control over your ride height with the push of a button. By pairing our HRD AIR Dampers with a management system from Air Lift, you get the ultimate air suspension setup with a plug and play installation.\u003c\/p\u003e\n\u003cp\u003eOur HRD AIR Dampers are also compatible with all other leading management kits as we provide our kits with both quick disconnect fittings and leader lines. Air Lift Performance management kits, compressors, tanks, and more are available on \u003ca href=\"https:\/\/www.happyracer.com\/collectons\/air-lift-performance\"\u003e our website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Dampers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For Dampers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Dampers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eCompatible with Popular Management Kits such as Air Lift 3H and 3P\u003c\/li\u003e\n\u003cli\u003eComes with Quick Disconnect Fittings and Leader Lines\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD AIR was designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with HRD AIR. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSuper-low Dampers and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of air Dampers just for you. Lead times on customized air Dampers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Dampers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD AIR is covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41417897672798,"sku":"HRD-AIR-VB","price":2550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/14-21WRXAIRFullset.png?v=1738818234"},{"product_id":"hrd-street-performance-coilovers-for-2000-2006-acura-rsx-incl-type-s","title":"HRD Street Performance Coilovers for 2000-2006 Acura RSX (Incl. Type S)","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 8kg \/ Rear Spring Rate: 10kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420204900446,"sku":"HRD-SPD-RSX1","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2006-2011-honda-civic-si","title":"HRD Street Performance Coilovers for 2006-2011 Honda Civic Si","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 6kg \/ Rear Spring Rate: 7kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420210569310,"sku":"HRD-SPD-FGFA","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-1989-2005-mazda-miata","title":"HRD Street Performance Coilovers for 1989-2005 Mazda Miata","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 7kg \/ Rear Spring Rate: 4kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420295831646,"sku":"HRD-SPD-NANB","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2003-2009-nissan-350z-1","title":"HRD Street Performance Coilovers for 2003-2009 Nissan 350Z","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420307136606,"sku":"HRD-SPD-350ZD","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2022-nissan-400z","title":"HRD Street Performance Coilovers for 2022+ Nissan 400Z","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420312248414,"sku":"HRD-SPD-400ZD","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"},{"product_id":"hrd-street-performance-coilovers-for-2009-2021-nissan-370z","title":"HRD Street Performance Coilovers for 2009-2021 Nissan 370Z","description":"\u003cp\u003eHRD Street Performance Coilovers are engineered to meet the needs of enthusiasts seeking enhanced suspension performance without disrupting the refinement of their ride quality. Leveraging use of our Dual Duty Digressive Damper™ technology, the engineering team at HRD has accomplished our goal of creating the ultimate suspension for cars driven on the street while retaining incredible control over pitch and dive characteristics, allowing you to be track day ready. Our research and development process started with a blank slate, allowing our engineers to be fixated on developing the ultimate performance suspension within a vacuum.\u003c\/p\u003e\n\u003cp\u003eEach set of our Coilovers features our proprietary stainless steel pillowball bearings, designed to increase longevity on cars driven in all weather conditions. HRD also utilizes our own titanium hardware including top hat studs and nuts, damping adjustment knobs, and our pillowball bearing collars. Electrophoretic deposition (EDP coating) is used on all of our shock bodies to further increase the longevity of our Coilovers in adverse climates.\u003c\/p\u003e\n\u003cp\u003eAll of our off-the-shelf kits feature spring rates that have been meticulously selected by taking into account shock travel, motion ratios, and harmonic frequencies transmitted from the road into the cabin during street and track use. We've intentionally selected spring rates that are appropriate for each chassis, giving a balanced and refined driving experience that inspires confidence without the need to overspring our suspension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual Duty Digressive Damper™\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach set of suspension from HRD features a monotube design utilizing our Dual Duty Digressive Damper™ technology. Digressive valving provides higher damping force at low piston speeds. This improves control during low-speed events such as cornering, braking, and acceleration, allowing for better vehicle stability and handling.\u003c\/p\u003e\n\u003cp\u003eAt higher piston speeds, the damping force levels off, allowing for softer reactions to bumps, potholes, and other road imperfections. This ensures that the ride remains both comfortable and refined while maintaining excellent tire contact with the road for improved grip.\u003c\/p\u003e\n\u003cp\u003eThis technology has allowed HRD to create a suspension system that feels balanced and predictable under all conditions. It provides the stiffness needed for precise handling during performance driving and the refinement required for everyday road conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMonotube Construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHRD's monotube damper design separates the damping oil and gas chamber with a floating piston. This configuration dissipates heat more effectively, ensuring consistent damping performance during prolonged or intense use, such as extended track days.\u003c\/p\u003e\n\u003cp\u003eOur monotube design accommodates a larger piston, allowing for more precise and consistent damping control across the entire valving curve. This enhances the overall effectiveness of the suspension system, making it more responsive to both low-speed and high-speed events.\u003c\/p\u003e\n\u003cp\u003eMonotube Coilovers are constructed with a single, larger-diameter tube, which is inherently stronger and more durable than alternatives such as twin-tube designs. This makes them ideal for high-performance applications where durability and reliability is paramount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrophoretic Deposition (EDP) Coating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis advanced coating method involves submerging components in an electrically charged bath containing epoxy or acrylic resins. The electric current evenly deposits the coating onto the component’s surface, even reaching intricate crevices and hard-to-coat areas. Once applied, the coating is baked to create a durable, uniform finish that is highly resistant to corrosion, chipping, and wear. For coilovers, which are often exposed to harsh conditions such as road salts, debris, and moisture, EDP coating provides exceptional longevity and maintains both structural integrity and aesthetics.\u003c\/p\u003e\n\u003cp\u003eCompared to alternative options like powder coating or zinc plating, EDP coating offers superior uniformity and coverage. Powder coating, while durable, can sometimes leave small gaps or uneven finishes in hard-to-reach areas, leading to potential corrosion vulnerabilities. Zinc plating, on the other hand, provides basic corrosion resistance but lacks the robustness and longevity of EDP coating, especially under extreme environmental stress. EDP coating helps ensure that your Coilovers maintain their appearance and functionality for years without premature wear even in adverse climates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Springs Standard\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwift Springs are celebrated as the pinnacle of suspension technology, thanks to their unique combination of material science and innovative engineering. The foundation of their superiority lies in their proprietary steel alloy, HS5.TW, which is lighter and more resilient than the silicon chrome steel alloys used by most competing spring manufactures. This also allows Swift to use less coils per inch on their springs, reducing unsprung weight from your suspension.\u003c\/p\u003e\n\u003cp\u003eOne of the defining characteristics of Swift Springs is their linear spring rate, which ensures consistent performance throughout the spring's compression range. This feature not only improves tire grip but also reduces unnecessary suspension movement, providing a predictable and stable driving experience. Additionally, Swift Springs exhibit minimal coil binding and harmonic vibration, which are common issues with alternative springs, ensuring long-term durability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15 Way Adjustable Compression and Rebound\u003c\/li\u003e\n\u003cli\u003eDual Duty Digressive Damper™ Technology\u003c\/li\u003e\n\u003cli\u003eProprietary Stainless Steel Pillowball Bearings\u003c\/li\u003e\n\u003cli\u003eTitanium Hardware on Studs, Nuts, and Pillowball Collars\u003c\/li\u003e\n\u003cli\u003eTitanium Damping Adjustment Knobs\u003c\/li\u003e\n\u003cli\u003eSwift Springs Standard on all HRD Street Performance Coilovers\u003c\/li\u003e\n\u003cli\u003eAnodized Aluminum T6 6061 Camber Plates and Mounts\u003c\/li\u003e\n\u003cli\u003eMonotube Damper with High Pressure Nitrogen\u003c\/li\u003e\n\u003cli\u003eFront Spring Rate: 12kg \/ Rear Spring Rate: 8kg\u003c\/li\u003e\n\u003cli\u003eDurable Anodized 7075 Aluminum Spanner Wrenches\u003c\/li\u003e\n\u003cli\u003eAll-Weather EDP Coating on Shock Bodies\u003c\/li\u003e\n\u003cli\u003eAssembled in the United States\u003c\/li\u003e\n\u003cli\u003e5 Year Limited Manufacture's Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrack Ready, Daily Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur Street Performance Coilovers were designed from the ground up for the enthusiast seeking a refined and composed ride on the street that simultaneously inspires confidence when pushed to the limits. We've intentionally engineered our suspension with the dual duty purpose many of us build our cars for - something you can enjoy thoroughly in your day to day use, while being ready to tackle weekend track days without breaking a sweat.\u003c\/p\u003e\n\u003cp\u003eIf you're seeking a transformative change to your car's suspension, elevate your driving experience with our Street Performance Coilovers. Built from the ground up for enthusiasts like you in mind that are looking for the ultimate dual duty solution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBespoke Builds Available\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlternative spring rates, longer travel shocks, super-lows and other options are available from HRD. While our off the shelf kits are designed as the ultimate plug and play solution for the majority of enthusiasts, our engineers are capable of building a bespoke set of Coilovers just for you. Lead times on customized Coilovers are between 4 and 8 weeks, subject to our manufacturing capacity. For more information on selecting specs for your bespoke set of HRD Coilovers you can email tech@happyracer.com or visit \u003ca href=\"https:\/\/www.happyracer.com\/pages\/bespoke\"\u003eour website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HRD Way\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is our mission at HRD to engineer motorsport products that are transformative to how your vehicle feels both on and off the track. From the moment you begin the unboxing experience, you will feel the passion and love that has gone into even the smallest of details across the entire HRD product line. Our team has set out to create components that we would be proud to recommend to our friends and family. With no expense spared, it is our mission to redefine expectations for motorsport enthusiasts across the globe, and we hope that you will join us on this journey.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eHRD Street Performance Coilovers are covered under a 5 year limited manufacture's warranty. More information can be found on \u003ca href=\"https:\/\/www.happyracer.com\/pages\/warranty\"\u003eour warranty page\u003c\/a\u003e.\u003c\/p\u003e","brand":"HRD","offers":[{"title":"Default Title","offer_id":41420313690206,"sku":"HRD-SPD-370ZD","price":2150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/files\/HRD_Street_Performance_Dampers.png?v=1769665204"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/9485\/1166\/collections\/hrd-logo-white-transparent.png?v=1737631453","url":"https:\/\/happyracer.com\/collections\/hrd.oembed?page=5","provider":"HRD","version":"1.0","type":"link"}