Firestone Coil-Rite Air Helper Spring Kit Rear 08-14 GM SUV (W237604186) Fabrication>Clamps Each system is built from

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

Our end caps are made of an ultra high-strength nylon composite which is strong as steel

Insufficient pre-load can result in bearing failure

110% Increased Holding CapacityThe FX250 System uses the Power Plus I Heavy-Duty Pressure Plate and utilizes a combination of our Fiber Tough friction material on the side of the disc contacting the pressure plate

Firestone Coil-Rite Air Helper Spring Kit Rear 08-14 GM SUV (W237604186) Fabrication>Clamps Each system is built fromIf 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