170 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Silver (Pair) The spacers are available in

The spacers are available in different widths and register bore hole sizes to match your specific engine application and supercharger model

Manufactured with lightweight aluminum technology

The quick spool system can be initiated via a switch

improve starting and provide a much higher rpm range

Speedmaster offers this set of valve spring shims to solve this problem and eliminate failures

170 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Silver (Pair) The spacers are available inSpeedmaster 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. Each spring is guaranteed to be within five percent of its advertised rate.