Get rid of those rough riding leaf springs and step 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.