When the load's the biggest job of the day, the Air Lift 57579 LoadLifter 7500 XL Ultimate Air Spring Kit delivers up to 7, 500 lbs. of load-leveling capacity* to keep your truck balanced and confident. Built for 3/4-ton and 1-ton vehicles with leaf springs, this kit gives you the strength, performance, and ride quality you deserve under heavy loads.• Up to 7, 500 lbs. of load-leveling capacity*• Massive 7" double-bellow air springs give 20% more volume than the LoadLifter 5000• Internal jounce bumper absorbs impact even when air pressure is low• Designed for 3/4-ton and 1-ton trucks with leaf springs• Many kits install without drilling and are compatible with factory in-bed hitches• Helps eliminate squat, sway, body roll, and bottoming out for a safer, smoother ride• Comes with roll plates to protect air springs and increase capacity• Compatible with a wide range of heavy-use applications including gooseneck and 5th-wheel setups* Do not exceed the vehicle's gross vehicle weight rating (GVWR).FITMENTtable, th, td {border: 1px solid black; border-collapse: collapse;}th {text-align: left;}th {padding-left: 4px;}td {padding-left: 4px;} Year Make Model Drive 2023-2026 Ford F-450 Super Duty 4-Wheel Fully adjustable springs work to eliminate squat, sway, body roll, & bottoming out 7"" double-convoluted bellows with greater leveling ability at lower air pressure No drilling, bolt-on installation | Air Lift LoadLifter 7500 XL Ultimate Air Spring Kit, '23-'26 Ford F-450