GSC Power-Division Single Valve Spring Set w/ Titanium Retainers - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI)

Spectral Performance carries a great selection of quality performance valvetrain upgrades brought to you by GSC Power-Division. 

This is the GSC Power-Division Single Valve Spring Set and Titanium Retainer Kit which 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