150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) made from 4340 round bar

made from 4340 round bar to exact tolerances

They include all hardware for quick and easy installation

These are direct plug replacements for OEM coils

Speedmaster alternator pulleys are manufactured from quality materials to ensure strength and durability

but have profiled counterweights for less weight

150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) made from 4340 round barSpeedmaster 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.