Offering up to 7, 500 pounds of load-leveling capacity, the new Load Lifter 7500 XL Ultimate kit from Air Lift will make towing and hauling with your vehicle a breeze. With the added stability and weight-distribution that air springs provide, you have optimal braking and steering control, creating a safe and comfortable experience. Air Lift adjustable air helper springs level your load, and give your truck, van, or SUV a safer, more comfortable ride. The kits are easy to install between your existing springs and the vehicle frame. Just add air when towing or hauling a heavy load, and reduce air pressure when unloaded, they are fully adjustable for a great ride. Air Lift air springs eliminate sag, sway, and bottoming out. They are made with rugged, durable components for long, reliable service. All backed by Air Lift's Limited Lifetime Warranty and 60-day Ride Satisfaction Guarantee. Kit fits the following vehicles: F-250 and F-350 4WD 2017, 2018, 2019/ F-450 4WD 2017, 2018, 2019, 2020, 2021, 2022. Does not fit commercial chassis.