Air Bag Kit 11- GM P/U 2500HD

The Air Bag Kit 11 for GM P/U 2500HD (Part #57338) is a rear air spring suspension upgrade system engineered specifically for full-size GM pickup trucks manufactured from 2011 to 2015. This Loadlifter 5000 air spring kit delivers a 5,000-pound load capacity, making it the ideal solution for truck owners who regularly haul heavy payloads, tow trailers, or carry equipment that challenges the factory suspension geometry. The system includes air spring bags, mounting brackets with black powder coat finish, and all necessary air lines for complete installation.

The 5,000-pound capacity of this air suspension kit addresses a critical limitation of factory springs on heavy-duty trucks: maintaining proper ride height and suspension geometry under load. Factory springs compress excessively when the truck reaches or exceeds its GVWR, causing uneven tire wear, compromised handling, reduced braking effectiveness, and premature wear on rear components. By adding adjustable air spring support, this kit allows drivers to maintain consistent ride height regardless of payload weight, distributing load stress evenly across the suspension system and extending the service life of existing components.

This upgrade is specifically designed for truck owners who depend on their 2011–2015 Chevy Silverado 2500HD or GMC Sierra 2500HD for work that demands load-carrying reliability. Contractors, fleet operators, and serious off-road users appreciate the adjustable support that air springs provide—pressure can be dialed in or released as needed, adapting the suspension to current load conditions in minutes. The black powder coat finish on the brackets resists corrosion from road salt and weather exposure, ensuring durability in harsh driving environments. Complete installation includes all bags, brackets, and air lines required for a full rear suspension retrofit on GM full-size trucks in this generation.