With up to 7, 500 lbs. of load-leveling capacity and huge 7" double-bellows air springs, the LoadLifter 7500 XL can level massive loads like they're nothing. Designed for 3/4 and 1-ton trucks, LoadLifter 7500 XL is built to support the largest loads on the road.7" Double-Convoluted-Bellow Air Springs create a better ride than most products with similar weight ratings. Up to 20% More Air Spring Volume than LoadLifter 5000 air springs. Upper and Lower Roll Plates protect the air springs from possible abrasion and increase load capacity up to 10%.End Caps made of ultra high-strength, corrosion-proof nylon composite are as strong as steel but weigh less and will not rust. Air Adjustable from 5 to 100 PSI. No Drilling Required. Use the existing holes in the vehicle's frame for a bolt-on installation. Compatible with Most 5th Wheel and Gooseneck Hitches. LoadLifter Kit includes 2 air springs, all necessary mounting brackets, all installation hardware, and fully illustrated installation guide. Air Lift Part No. 57577 fits 2017-2020 Ford F-250, F-350, and F-450 Trucks. Up to 20% more air spring volume Air adjustable from 5 to 100 PSI No drilling required for installation | Air Lift LoadLifter 7500 XL for 2017-2020 Ford F-250, F-350, and F-450