GM Air Bag Super Duty System

The Air Lift GM Air Bag Super Duty System (part number 57275) is a rear air spring suspension kit engineered to restore and enhance load-carrying capacity on GM full-size trucks from 2001–2010. This LoadLifter 5000 system combines air springs, mounting brackets, and distribution lines into a complete package that adds 5,000 lbs of leveling and lifting capability, restoring original ride height under heavy cargo or trailer loads without modifying the factory suspension geometry.

The kit features black powder-coated steel brackets designed for corrosion resistance and long-term durability in varied weather conditions. At 18.95 lbs, the complete system is a direct bolt-on retrofit requiring no welding or permanent modifications to the frame. The integrated air lines connect to individual air springs that adjust pressure independently, allowing precise height control for different load scenarios—whether hauling cargo in the bed or towing a trailer. This modular design means the system works seamlessly with factory or aftermarket shocks.

This system is built for truck owners who regularly encounter load-induced sagging and need a reversible solution that preserves factory aesthetics. Contractors, fleet operators, and owners who alternate between light and heavy hauling benefit most, as the air spring pressure can be adjusted on the fly without a compressor on-board—simply inflate to the pressure suited to your current load. The LoadLifter 5000 raises the rear axle without lifting the frame, maintaining proper driveline angles and brake proportioning.