Sierra 3500HD 2016-2025 GMC (Chassis Cab Models) Rear LoadLifter7500XL Air Bag Kit by Air Lift

Upgrade your GMC SIerra 3500HD Chassis Cab with the Air Lift's 57543, a 7500 XL Ultimate kit—designed for maximum load-leveling performance, comfort, and control. Featuring massive 7-inch, double-convoluted air springs, this kit provides up to 7,500 lbs. of leveling capacity*, making it ideal for heavy towing or hauling. The fully adjustable air springs (5–100 PSI) help eliminate common load-related issues like squat, poor headlight aim, trailer sway, body roll, and bottoming out—all while maintaining a smoother, safer ride.

This underframe-mounted system is compatible with most in-bed hitches and includes internal jounce bumpers that absorb shock and provide support even at zero PSI. Easy installation and a limited lifetime warranty with a 60-day ride satisfaction guarantee make this a smart and reliable solution for commercial chassis applications.

Features and Benefits:

• Heavy-duty 7500 lbs of leveling capacity
• 20% more air spring volume than standard air bags
• Eliminates or reduces rear-end sagging when towing or hauling heavy loads
• Improves suspension performance, stability, and handling
• Air Lift's industry-exclusive Lifetime Warranty covers the entire contents of the kit! Plus a 60-Day No Questions Asked Money Back Guarantee.
• Air adjustable from 5 to 100 PSI
• Adjust ride firmness manually or with the optional air compressor system
• Includes roll plates to protect the air springs
• Most popular kits require no drilling into the frame
• Easy to install with an illustrated instruction manual
• Quick connecting, easy-to-use air fitting