The Air Lift Company LoadLifter 5000 and LoadLifter 5000 Ultimate, Nos. 57365 and 88365, are adjustable air spring kits designed for Ram 1500 trucks, model years 2009 to 2015, to improve ride quality, handling and safety when towing and hauling heavy loads. The two heavy duty towing options, with application-specific brackets and air springs, support the Ram 1500's five-link-coil rear suspension system. The kits ensure weight is distributed to all four tires to maximize stability, safety and comfort. The air springs work with existing suspension to improve braking and steering, eliminate squat and sway and maintain ideal ride height, according to the company. The LoadLifter 5000 kit provides up to 5,000 pounds of leveling capacity, and the Ultimate version has a shock-absorbing internal jounce bumper.