Get rid of your leaf springs and step up to a smooth riding, 4-link system from Kelderman Air Suspension Systems. Smooth ride, killer looks, and unmatched load- carrying capacity! Don't be the guy with a lifted truck who's tail is dragging on the ground once his toy hauler is hooked up! The 4-link will keep the bed at the same height whether you have 50 pounds in the bed or 5000 pounds! Designed for up to 40" tires.

Kelderman Air Suspension Systems has developed a 6-8" rear air lift kit for your 2011 & newer GM 3/4 ton or 1-ton truck!

Get rid of those rough riding leaf springs and set up to a Kelderman 4 link and ride on air! Smooth riding and commercial grade durability. Not only does your truck look like an award winning show truck, it has a suspension capable of whatever challenge you want to throw at it. The automatic leveling air system will keep your truck level no matter how much weight you put on it. Smooth ride empty, and a smooth ride loaded. Yes, its that easy with Kelderman Air Suspension. Designed for up to 40" tires.

If you want the best F-450 lift kit then Kelderman has your answer.

Take your F-450 to new heights with the help of Kelderman Air Suspension

Perfect sized lift for those who want a decent sized lift kit, but need to haul trailers. This kit drops to a 2" kit when deflated and tops out at close to 9" when parked! 35" tires are perfect for this kit.