Heavy Duty valve spring set, for use with WC109AT1010901 and WC109AT1010901SOLID camshaft, For use with GTI 8v engines up to 1995

These stiffer valve springs alone will extend the revving capabilities of your valve train to the 8,000 rpm mark. In addition, the Sport Tuned valve spring set will eliminate potential coil bind on high lift cams. When properly installed they will allow up to 0.500 inches of cam lift. A good idea for any high performance engine. Designed to fit stock retainers. Remember: Always keep the lower valve spring seats in your cylinder head to prevent damage to the aluminum casting