High-Rev. Single Valve Springs, Set of 8

Hand checked and maganafluxed for top quality, this is the best Single Valve Spring on the market for Hi-Performance street applications. 1.255" Diameter and approx. 2.135" Free Length offers 114# @ 1.500" installed height - 216# @ 500" lift. Bind @ .932". Recommend for Camshafts up to 500" lift.