RCM Subaru EJ# Line bore Engineering Process ECU's & Components and manufactured by Roger Clark

and manufactured by Roger Clark Motorsport

Engineered to withstand the heat

durable materials

A genuine Subaru Timing Belt tensioner foam seal

race and rally teams have preferred to use the original 2 piece tensioner system as it is more reliable than the later single piece tensioner

RCM Subaru EJ# Line bore Engineering Process ECU's & Components and manufactured by Roger ClarkSubaru EJ# Line bore Engineering Process At RCM Engineering, precision is at the heart of everything we do. Our Subaru EJ series line bore process has been developed and refined over decades of building and maintaining championship winning engines. Whether its a factory EJ20, EJ22, or EJ25, achieving perfect main bearing alignment is critical for reliability, performance, and oil system efficiency. What is Line boring? Line boring is the process of