Firestone's heavy duty Ride-Rite air helper springs are the work horse of the air helper spring line. The double convoluted air springs offer maximum load support as well as years of worry free service. Ride-Rite air helper springs can be installed on most light trucks, motorhomes, RV's, SUV's and vans. Ride-Rite air helper springs are installed between the frame of the vehicle and the suspension, providing load support through the use of air pressure. Ride-Rite air helper springs utilize a pair of convoluted air springs which can be adjusted for changing loads. These air springs are capable of 3,200 - 5,000 lbs. of load leveling capacity per set. Ride-Rite air helper springs enhance the ride by reducing leaf friction. Please remember that air springs do not increase the load carrying capacity of your vehicle.