130 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Black (Pair) Aluminum also promotes faster heat

Aluminum also promotes faster heat dissipation for further cooling of your transmission

Speedmaster GM automatic transmission parts are manufactured using the highest-quality materials for strength and durability

Make valve cover installation and removal easy and hassle-free with Speedmaster allen head valve cover bolts

These Speedmaster main bearings are just what you need to freshen up your engine

130 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Black (Pair) Aluminum also promotes faster heatSpeedmaster coil springs are designed to withstand the high stress levels of modern suspensions. They're manufactured from high quality chrome silicone steel, heat treated and shot peened, and then powdercoated or plated for protection and appearance.