Selling new Cosworth retainer & titanium valves spring.
Available for mitsubishi:
4G93/4G93T GSR dohc
4G63 EVO 1,2,3
available for honda:
Honda B16A, B18B, B18C
( Dual spring )
* Cosworth valve springs are designed to control the valve under these demanding conditions and are wound from high quality steel with chamfered ends to reduce wear on valve train components.
* Each kit consists of valve springs with matched lightweight titanium retainers, keepers, and hardened steel springs seats.
* When high performance camshafts, with their longer duration and higher lift, are installed the stress can be increased even further.
* The springs can cycle thousands of times per hour.