High Endurance™ Valve Springs are test-proven for 700 racing miles, Isky High Endurance valve springs are wound from “super clean” chrome silicone wire. Perfect for Late Models, Modifieds, and other race cars running up to 8,000 RPM. Sold in sets of 16.
- Valve Spring - SP-Series - Dual Spring / Damper - 460 lb/in Spring Rate - 1.170 in Coil Bind - 1.550 in OD
- Set of 16
- Part Number: 9365SP
