170 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Silver (Pair) They're constructed of high-grade aluminum

They're constructed of high-grade aluminum and feature a shiny

The TorqueWorm is a torque bias

a new lower housing casting for enhanced fuel flow

High-horsepower and hard launches at the drag strip can cause tremendous stresses on the internal transmission components

Replace your bent or rusty dipstick and tube with one of Speedmaster engine oil dipstick and tube kits

170 lbs./in. Spring Rate 12" Tall Coil Over Shock Springs - Silver (Pair) They're constructed of high-grade aluminumSpeedmaster 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.