150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) These coils have corrosion-protected laminations

These coils have corrosion-protected laminations to protect coils from the harsh operating environment

Speedmaster crankshafts are nitride-hardened

Speedmaster high-volume water pumps have a ribbed aluminum housing and a heavy-duty ball/roller bearing assembly

They feature a chrome plated dipstick and tube that uses a fully polished billet aluminum handle

Solenoid and RPM switch sold separately

150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) These coils have corrosion-protected laminationsSpeedmaster 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.