Firestone Coil-Rite Air Helper Spring Kit Rear 08-14 GM SUV (W237604186) Fabrication>Clamps drivers can use the Sound

drivers can use the Sound Remote Controller to regulate the valves

Polyurethane bushings increase power to the ground by reducing the deflection associated with rubber

Kit installation requires minor airline access drilling with minimal special tools but no frame drilling

Each system is built from premium T-304 stainless steel and is mandrel bent to give you the absolute best in performance and durability

This cat replacement is constructed of mandrel-bent

Firestone Coil-Rite Air Helper Spring Kit Rear 08-14 GM SUV (W237604186) Fabrication>Clamps drivers can use the SoundIf you're looking for a smoother ride for your vehicle that has a coil spring suspension, Firestone Coil Rite air helper springs are what you need. Designed to fit inside existing coil springs to create a variable spring rate, Coil Rite will level your vehicle and assist with more effective braking and handling, even under heavy loading and adverse road conditions. Coil Rite enables you to control the air pressure in the air helper springs so you can