RCM prides itself having OE parts manufacturers as their technical partners. This is never more important than with our range of RCM Power Parts timing belt kits where we are working closely with NTN, NSK, Koyo & Aisin to formulate our ...
The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics meet high end performance. What you see here is the result of years of research and testing, ...
A Genuine engine gasket kit, for EJ257 engines.
Modine Oil Cooler fitted to 2008+ UK STi
K&N are world-renowned for their expertise in high performance air filtration. The filter technology and construction is second to none. You’ll find a K&N filter in pretty much every activity that involves a high performance interna ...
RCM External Wastegate V Band Fitment (45mm), for use with RCM twisted turbo kit (RCM570)
RCM Titanium retainers, for use with our own double valve springs and the later style buckets with intergrated shims. This is for a set of 16 retainers.
RCM Double Valve Spring Set. Suitable for use on V5+ Cylinder Heads, with the correct spring seats and retainers. Our valve springs are designed and manufactured to reduce valvetrain harmonics, increase durability and provide an increase ...
Tumbler Generator Valves (or "TGV" as they are most commonly referred to) can be found on Impreza WRX, Forester Turbo and Legacy GT models from 2001 onward. Their prime purpose is to reduce emissions from cold idle to meet standards gov ...
Genuine Subaru gudgeon pin circlips available individually or as a set of x8.
The Turbosmart Internal Wastegate Actuator is the perfect upgrade for your RCM Precision Subaru turbo, delivering sharper boost response, improved stability, and long-term reliability. Designed to thrive under the extreme demands of high-pe ...
RCM Billet Fuel Rails are the perfect addition to any performance engine project. Our billet rails are designed and manufactured to cater for performance Injector Dynamics top feed injectors where the need for improved fuel feed and routing ...
NGK are the World leaders in spark plug technology. With over 80 years of automotive expertise, they are driven by extreme dedication to performance and quality. From OEM to aftermarket, they push the boundaries of innovation to give you th ...
This is an STI Sports Rear limited slip differential rebuild kit for R180 differentials. This totally comprehensive kit contains everything you'll need to carry out a full rebuild on your rear differential unit.
A Genuine Subaru 3 port boost control solenoid. Want to retain that factory look?..look no further....essential for any modified Subaru running larger turbochargers and/or higher than factory levels of boost pressure.
Enkei Sport Wheel Nut Set designed specifically for Motorsport and as used on RCM's Gobstopper I & II. These are M12 x 1.25 and 40mm in length overall. They are made from Super Hardened steel and feature a clever separate tapered seat w ...
The STI Group N top mount is designed specifically for competition use featuring an all alloy top with a 22m spherical bearing. Manufactured to the usual high STI standards in Japan. This mount is a direct replacement part meaning no modifi ...
In our eyes the ultimate Subaru big end bearing set as used in all our high powered EJ engines including the RCM Gobstopper program. On such a crucial component, why compromise?
RCM have engineered this unequal length exhaust manifold specifically for Motorsport applications with the single scroll turbo in the stock position. Developed to withstand extreme and prolonged engine loads, our range of hand made motorspo ...
The Subaru pink stars STI rear / trunk badge was unique to the STI models and is now available from Roger Clark Motorsport as a replacement part for the Impreza 2008-2013. This badge is for the Sedan model only and not the Hatch back. (For ...
If your serious about building EJ Subaru engines, these brackets are an absolute god-send! Simply bolt the brackets to your work bench and once you've assembled your short engine you can bolt it down onto the brackets. When you come to torq ...
We will need your existing compressor housing to be able to do this for you, alternatively we can supply you with a new complete turbo with the restrictor already fitted! Motorsport governing bodies around the world have different regulatio ...
This is a replacement toothed drive belt for an RCM Subaru Dry Sump kit. There are x2 options available. The earlier pre-2025 year kits ran a 19mm width drive belt. 2025+ kits ran a 25mm wide belt for increased belt grip. To run the 25mm wi ...
In the ACL Race Series, the unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Tri-metal engine bearings.Designed to withstand higher RPM conditions, ACL Race Series E ...