GMC Sierra 1500 Air Suspension Helper Spring Kit

Eliminate rear-end sag when towing heavy trailers or hauling heavy loads. These air springs mount between the frame and the rear axle of your Sierra 1500, providing up to 5,000 lbs of load-leveling capacity. They do not increase the vehicle's GVWR, but they keep the vehicle level, which improves headlight aim, steering responsiveness, and braking performance. The air pressure is adjustable from 5 to 100 PSI, allowing you to soften the ride when empty and firm it up when loaded. Includes air lines and Schrader valves.