Firestone Ford Ride-Rite air bag helper springs are the work horse of the Firestone air helper spring line. The double convoluted air bag springs offer maximum load support as well as years of worry-free service. Ride-Rite air helper springs are installed between the frame of your truck and the suspension, providing load support through the use of air pressure. Specifically designed to maximize the safe load carrying capacity, stability and ride quality of your truck. Will also reduce the suspension fatigue on leaf springs caused by permanently sagging. An optional air control kit (air compressor kit) can be added (not required) for additional convenience.