Designed for 3/4- and 1-ton trucks, LoadLifter 7500 XL offers up to 7, 500 lbs. of load-leveling capacity* and is designed to support the largest loads on the road. The available volume in the massive 7 diameter double-bellows air springs (vs. 6 diameter on LoadLifter 5000) allows for greater leveling abilities at lower air pressures. This ensures the maximum load support with a more comfortable ride, no matter the load. All kits are compatible with most 5th wheel and gooseneck hitches. Mfr. lifetime warranty. Never exceed manufacturers recommended Gross Vehicle Weight Rating. Most kits use existing holes in vehicle frame for bolt-on installation no drilling required! Easy to install with illustrated installation manual End caps made of ultra-high-strength, corrosion-proof, nylon composite which is as strong as steel but weighs less & will not rust | Air Lift LoadLifter 7500XL Air Suspension System, 2003-2013 Dodge Ram 2500 4 WD; 2003-2017 Dodge Ram 3500 4WD