550 lbs./in. Spring Rate 7" Tall Coil Over Shock Springs - Silver (Pair) The TorqueWorm is a torque

The TorqueWorm is a torque biasing 6 pinion gear type limited slip unit

Upgrade your GM Powerglide or TH400 for extreme horsepower applications with this big shaft stator tube kit

you'll need to look at every area of the transmission to boost your performance

Engineered for durability and precision

550 lbs./in. Spring Rate 7" Tall Coil Over Shock Springs - Silver (Pair) The TorqueWorm is a torqueSpeedmaster 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.