1.550" High Lift Dual Valve Spring For Racing Applications

Attributes GTIN: 00036584380986 Brand Name: COMP Cams Number of Springs: 1 Compatible .520" Guide Diameter Spring Seat: 4641-1 Valve Spring Series: Dual Damper: No Compatible Retainer: 1732-1 Compatible Spring Cup (O.D. Locator): N/A Compatible .640" Guide Diameter Spring Seat: 4643-1 Compatible .570" Guide Diameter Spring Seat: 4642-1 Compatible Shims: 4757 Outer Spring Outside Diameter: 1.55 Spring Rate: 583 Open Load: 810 Seat Pressure: 285 Installed Height: 2.15 Coil Bind Height: 1.19 Inner Spring Inside Diameter: 0.784 Outer Spring Inside Diameter: 1.106 Spring Style: Dual Amazon ASIN: B07M9GWJZN C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle. C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle. C.A.R.B. Exempt for California Certified Vehi