Isky Cams Max-Life Dual Valve Springs w Damper - 644 lb./in Spring Rate - 1.150" Coil Bind - 1.570" OD (Set of 16) Motor Mount Spacer The Simpson Hybrid Sport offers

The Simpson Hybrid Sport offers the same features as the Simpson Hybrid Pro Slide in a value priced composite version

base plus boost

include a snap ring groove for coil-over applications

1996-1999 GMC K1500

Running Board Brace

Isky Cams Max-Life Dual Valve Springs w Damper - 644 lb./in Spring Rate - 1.150" Coil Bind - 1.570" OD (Set of 16) Motor Mount Spacer The Simpson Hybrid Sport offersProduct Description: Valve Spring Max Life Dual Spring Samper 644 lb in Spring Rate 1. 150 in Coil Bind 1. 570 in OD Set of 16 As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily in Isky's new enlarged dyno facility. To properly evaluate and prove the efficiency of Isky racing cams and valve