The Air Lift LoadLifter 5000 Ultimate offers up to 5, 000 lbs. of load-leveling capacity and features an internal jounce bumper to help absorb road shock and minimize bottoming out. These tough, durable air springs are fully adjustable from 5-100 PSI for a stable, level ride loaded or unloaded.• Up to 5, 000 lbs. of leveling capacity*• Air Springs are fully adjustable from 5-100 PSI for precise control• Levels your vehicle when towing or hauling for a safe, comfortable ride• Eliminates sag and bottoming out• Easy to install with included instructions• Underframe kit designed to work with most in-bed hitches* Do not exceed the vehicle's gross vehicle weight rating (GVWR).NOTE: Does not fit commercial cab and chassis or Dual Rear Wheel models. Operate Safely at Zero PSIUnlike standard air spring kits, the LoadLifter 5000 Ultimate has an internal jounce bumper. This unique addition enables the air bags to function safely even at 0 PSI if required. This innovative feature provides three-stage ride comfort, absorbing shock and vibrations from rough roads and uneven terrain. Drive with ConfidenceWith up to 5, 000 lbs. of load-leveling capacity, the LoadLifter 5000 Ultimate air spring kit is designed to handle the heaviest loads. Whether you're towing a trailer, hauling cargo, or carrying heavy equipment, these kits provide the support you need for a safe and stable ride. Fitment2023-2026 Ford F-250 and F-350 Super Duty Pickup, Single Rear Wheel, 4-Wheel Drive Fully adjustable from 5-100 PSI for a stable, level ride loaded or unloaded Underframe kit designed to work with most in-bed hitches Easy to install with included instructions | Air Lift LoadLifter 5000 Ultimate Air Spring Kit, 2023-2026 Ford F-250 and F-350 Super Duty Pickup, Single Rear Wheel