Load Capacity: 5000 lbs up. Can deliver superior load-carrying capacity. Can prevent body roll and bottoming out while towing heavy loads. Keep proper ride height. Replace your factory jounce bumper. Reduce bouncing at the rear of vehicle when towing. Stop vehicle’s main springs from sagging (due to constant load compression). When towing / hauling heavy loads, air springs raise safety /comfort working with your suspension. Two adjustable secondary air helper springs can add up to 5,000 pounds of leveling capacity per axle for vehicles with leaf springs. Instructions Are Not Included. We Recommend Professional Installation. Other items you might also like. BFO Coilovers Shocks Suspension Lowering Kit for Toyota CELICA FWD 94-99. 4Pcs Acrylic Window Side Visors Vent Rain Guard Sun Shade for Toyota RAV4 2019. Air Ride Suspension Compressor Pump For Benz W211 W220 S500 W/ Relay 2203200104. Front Right Suspension Air Strut Shock for Mercedes CLS500 W/Airmatic 2113209413.