By removing the factory leaf springs on your Ram 2500/3500, the Kelderman 4-Link Rear Air Suspension will lift the truck by 8-10″ at ride height. With optional self-leveling controls, you can lower the truck by 4 inches to hook up to a trailer, get in and out of the truck or fit inside an 8′ tall garage door. That’s right…a Kelderman lift kit allows you to run up to 40″ tires on your Ram and with just the push of a button, lower it down and into a standard 8′ tall garage door opening. By removing the factory leaf springs and replacing it with an industrial strength air bag suspension, your Ram achieves a level of ride comfort you never thought possible with a lifted truck. By having a full 4-Link Rear Air Suspension lift kit from Kelderman, you still maintain all the functionality of your Ram. Have a trailer that you need to pull? Drop all the air out of the truck, back up to the trailer, hook up, air the truck back up and pull away! No matter what you hook to the truck, this 4-Link Rear Air Suspension can add air pressure to the air bags accordingly to maintain your 8-10″ lift kit (when properly equipped). 4-Link Rear lift kits for your Ram include: upper and lower bag plates, industrial strength air bags, upper and lower trailing arms, side plates, pan hard bar, crossmember, larger rear sway bar, and new sway bar end links. Use our SLKD2WD Air Control System to make sure your truck maintains the 8-10″ ‘ride height’ or use the Air Lift 3H Electronic Air Control System with our 8-10″ 4-Link Front Air Suspension Lift Kit to let your truck drop to a 4″ lift deflated or up to 14″ when maxed out. Get more out of your truck with the help of a Kelderman Air Suspension Lift Kit.