150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) but have profiled counterweights for

but have profiled counterweights for less weight

These are direct plug replacements for OEM coils

2 SFI Approved and will withstand the extreme power and rpm of your performance application

Convert the Speedmaster Powerglide tail housing to accept a TH350/Powerglide yoke with the billet steel tail housing adapter

stainless steel alloy and are carefully designed to increase gas flow for more power

150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) but have profiled counterweights forSpeedmaster 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.