Cosworth Ultra Race Valve Spring Kits are engineered for use in situations that require valve control in extreme conditions. Each kit consists of dual valve springs with matched lightweight titanium retainers, keepers, and hardened steel springs seats. Cosworth Ultra Race Valve Springs are wound from the highest quality chrome silicone steel with chamfered ends and are heat treated and stress relieved for long term reliability. Ultra Race Valve Spring kits are compatible with Cosworth high performance valves.

Specifications:

Free L1 F1 F1 L2 F2 F2 Max Coil height mm N lbs. mm N lbs. Lift Bind 50.00 38.1 512 115 26.9 1268 285 12.0 25.7

L1=Install Height F1=Force @ L1 L2=Max Lift F2=Force @ Max Lift