Heavy-duty trucks need heavy-duty suspension. Now you can have the capability of heavy-duty suspension without a heavy-duty ride quality with a Kelderman 5-6″ 4-Link Rear Air Suspension. This kit removes your existing leaf springs and converts it entirely over to the air ride. With the help of Industrial airbags, your Ram will now have a smooth ride quality and an increased capacity, both better than stock! This kit will provide upper and lower air bag mounting brackets, airbags, axle clamps, adjustable trailing arms, adjustable panhard bar with heim ends, larger rear sway bar, sway bar end links, and rear crossmember. Shocks and air controls will be sold separately, as well as the 5-6″ Front Air Suspension Lift Kit. Use this with our 5-6″ Front Air Suspension Lift Kit and the Air Lift 3H Air Control System and you can raise & lower your truck at the push of a button. With no air in the system, the truck will drop down to about a 1″ lift to make it easy to get in & out of your truck, park in your garage, load items in the bed, and hook up to trailers. Re-inflate the truck to the 5-6″ ‘ride height’ setting for an unbeatable ride quality while driving down the road. Want to show off what your truck can do? This kit can go up to a 9″ lift when fully inflated! Designed for use with 37″ tires, this kit is THE BEST option for your suspension needs.