550 lbs./in. Spring Rate 7" Tall Coil Over Shock Springs - Silver (Pair) Design from the ground up

Design from the ground up based upon your favourite bowtie block with the ability to handle naturally aspirated

The GM LS3 Modular Ram Air Intake Manifold was designed for high-performance applications where induction system height is not limited

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

Engineered for durability and precision

If it has to seal right the first time Speedmaster has what you need

550 lbs./in. Spring Rate 7" Tall Coil Over Shock Springs - Silver (Pair) Design from the ground upSpeedmaster 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.