GSC Power-Division Single Valve Spring Set w/ Titanium Retainers 2002-2014 WRX / 2004-2021 STI
GSC Power-Division Single Valve Spring Set and Titanium Retainer Kit are the result of some of the most advanced manufacturing techniques in the industry. GSC uses an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities. This provides the spring with the highest level of spring load retention while still maintaining good fatigue for the life of the spring.
FEATURES:
- Includes 16 cylindrical valve springs
- Includes 16 titanium retainers that are CNC machined
- Nano peened and batched according to seat pressure within spec
- Max RPM: 8,200 RPM
- Maz boost: 32 psi