Load Lifter 5000 ULTIMATE for F-250 & F-350 4WDThis heavy duty kit, Load Lifter5000 Ultimate, is for F-250 & F-350 4WD for years 2005-2010. SPECIAL ORDER:  CALL FOR AVAILABILITYAll the benefits of the LoadLifter 5000â„¢ air spring kit with an exclusive internal jounce bumper inside, providing the ultimate in ride comfort and safety!! Closed-cell urethane foam provides a cushion of air that absorbs shocks and protects vehicles with heavy loads.   * Eliminates harsh jarring on rough roads   * Maintenance-free! Safely run with zero air pressure    *Replaces factory jounce bumper    *Provides three-stage ride comfortFactory suspensions must compromise between ride comfort and handling capacity. Smooth ride suspensions can't carry heavy loads and heavy springs ride rough when the vehicle is unloaded. Air adjustable springs solve these problems and give a safe, comfortable ride under all road conditions. Load Lifter5000 handles up to 5,000* lb. of load support.  Fits many 3/4 ton and 1 ton pickups and vans for hauling and towing. Includes air springs, brackets, lines and connectors. See us for specific fit applications. Price each. *Never exceed manufacturer's recommended gross vehicle weight rating.Tow and Haul with Safety & Comfort Air Lift adjustable air springs work with your existing suspension to give your vehicle more leveling support when you need it, so your vehicle is always level and stable. Proper weight distribution to all tires means more safety and a more comfortable ride as well. This results in: Improved braking and steering: when all four tires are firmly on the ground, braking time and steering are both improved Less sway: Air springs increase spring rate and vastly improve vehicle stability Less bottoming out: Air springs provide adjustable load support to help prevent bottoming out on rough roads. Headlight aim: Only level and stable vehicles provide safe and proper headlight aiming Less porpoising: Even vehicles which don’t squat when loaded can begin to “porpoise†vertically when towing heavy trailers. Adjustable air springs dramatically reduce this problem for a safer, more comfortable ride. More even tire wear: when weight is evenly distributed to all four tires, tires wear more evenly.Load Lifter5000 air springs fit easily between the leaf spring and your vehicle’s frame to provide suspension support. To operate, just add air to the air springs if you are carrying a heavy load to ensure that your vehicle remains level and stable. Then, deflate when riding empty. Air spring pressure is controlled through air line tubing that connects to the most convenient spot on your vehicle’s chassis. Our air springs are fully adjustable from 5 to 100 PSI.