Complete your RBC swap the HRD way.
When conducting an RBC swap, it's imperative to get a proper adapter for your OE throttle body. Our solution offers OE fit and finish alongside the addition of HRD flair in your engine bay.
Product Information
Overview
The 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.
Aluminum'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.
6061 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.
Particularly 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.
Aluminum'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.
6061 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.
Particularly 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.
Product Fitment
2012-2015 Honda Civic Si
What's in the Box
1x Aluminum Adapter Plate
2x Custom Molded O-rings
4x Titan Frost Ti Bolts
1x Stainless-Steel Hose Fitting
1x 1/8" NPT Plug
1x 90° 8mm Quick Connect Fitting (for Turbo Lines)
2x Custom Molded O-rings
4x Titan Frost Ti Bolts
1x Stainless-Steel Hose Fitting
1x 1/8" NPT Plug
1x 90° 8mm Quick Connect Fitting (for Turbo Lines)
Warranty
This product is covered by our industry leading limited-lifetime warranty. To read more about our warranty you can visit our coverage page by clicking here.
Dual Duty Design
The modern enthusiast asks their car to live two very different lives. It has to start every morning, survive traffic, and stay quiet enough to hold a conversation. Then, on demand, it has to feel sharp, confident and absolutely ready to hunt lap times or podiums.
At Happy Racer Development, that tension is not a problem to hide, it's the foundation of our Dual Duty philosophy. From dampers to drivetrain mounts to shifting hardware, every HRD component is engineered to operate across a wide spectrum of use, delivering real performance without sacraficing the ability to actually live with the car.
Refinement without loss of drivability is where Dual Duty truly differentiates itself. Anyone can make a part that feels extreme for a few laps; our goal is controlled, repeatable performance that you can live with every day.
You can read more about our dual duty design framework here.
At Happy Racer Development, that tension is not a problem to hide, it's the foundation of our Dual Duty philosophy. From dampers to drivetrain mounts to shifting hardware, every HRD component is engineered to operate across a wide spectrum of use, delivering real performance without sacraficing the ability to actually live with the car.
Refinement without loss of drivability is where Dual Duty truly differentiates itself. Anyone can make a part that feels extreme for a few laps; our goal is controlled, repeatable performance that you can live with every day.
You can read more about our dual duty design framework here.