1.550" High Lift Dual Valve Springs For Racing Applications

Attributes GTIN: 00036584380979 Brand Name: COMP Cams Compatible Spring Cup (O.D. Locator): N/A Compatible .640" Guide Diameter Spring Seats: 4643-16 Compatible .570" Guide Diameter Spring Seats: 4642-16 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: B07MK8RVFY 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 Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle. C.A.R.B. Exempt for Foreign Vehicles Manuf