Cosworth

20000166

Cosworth 20000166 High RPM Single Valve Springs

Springs

EJ25
Sold as a set.
Subaru STi (04 and up)

(EJ25) Built for the (04 and up) Subaru STi... Cosworth High RPM Vale Springs have been developed after countless hours of engineering, testing and validation ensuring the best possible spring for high performance applications. Cosworth High RPM Valve Springs are wound from the world's finest Japanese Kobe steel and feature dual chamfered ends to reduce wear on seats and retainers. Each spring has been engineered with increased seat pressure along with higher lift capability for optimum performance potential and improved valve control. Single spring design allows easy installation with no machining required and is perfect for typical high performance use.

Edelbrock 2992 Intake Manifold Base
Timken NP007430 Manual Transmission Bearing
Mix me 956