Does not fit cab & chassis models Fit Single/Dual Rear Wheel (SRW, DRW) models Fit most side mount fifth-wheel hitch applications. Just as picture showed. Capacity: up to 5,000 lbs. 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. Air Suspension Bag Kit 7500 lbs For Ford F250 F350 F450 Super Duty 4WD 2017-22. Suspension Enhancement System Rear L+R For Ford F250 Super Duty 2WD 4WD 2017-23. 2x Rear Air Shock Absorbers for Cadillac Escalade/GMC Yukon 1500 /Suburban 1500. Rear Air Suspension Strut Shock For Mercedes Benz R320 R500 R350 251320193160.