Valve Spring - Plus-Series - Dual Spring / Damper - 500 lb/in Spring Rate - 1.180 in Coil Bind - 1.560 in OD - Set of 16
Description
The Endurance Plus series of valve springs utilizes a specially processed Tool Room Material outer spring for increased endurance/reliability beyond the “SP” series. Endurance Plus springs are designed for late models, modifieds, etc., and are Spintron Test-Proven up to 8400 rpm for 850 racing miles.
