Maintain a level ride, even when loaded at maximum capacity, by adding a set of airbags to your Ford SuperDuty. These airbags work with your existing suspension to provide your truck with additional leveling and a safer ride. The LoadLifter 7500 XL Ultimate Helper Springs take their standard LoadLifter 7500's up a notch with the addition of an internal jounce bumper. This jounce aids in absorbing shock and allows the springs to be safely run at zero air pressure, where the non-jounce models require at least 5psi of air pressure.These AirLift airbags will work with your existing suspension to prevent the rear from squatting under load up to 7,500 pounds. By using high strength ballasts, as opposed to other methods, you will maintain a smooth ride that is completely adjustable for your preference, road, and load conditions. The built-in closed-cell urethane foam jounce bumper inside the air spring provides a cushion of air that absorbs shock, eliminates harsh jarring, and protects your cargo from damage that can be accrued from hard suspension hits.