Pacbrake Alpha XD Pro Rear Air Suspension, 2020-2024 L5P

Part# HP10355-X-J

$626.72 Includes Free Shipping.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits: 2020 thru 2024 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel

Eliminate truck sag, sway, and the danger of bottoming out with the ALPHA XD PRO 7500 lb air bags / air helper springs by Pacbrake. Step up from the vulnerabilities like air leaks and fractures in cold weather, which are often issues with the plastic end caps used by competitors, and choose the reliability, durability, and value of Pacbrake.

The ALPHA XD PRO™ Series is engineered for exceptional durability and performance, featuring Jounce Bumpers/Bump Stops. These are flexible polyurethane bumpers placed inside the air bags to prevent the risk of bottoming out that could otherwise lead to air spring damage. This feature also allows for running the air bags at 0 psi when unloaded, maintaining factory ride comfort. It's an ideal choice for those looking for the security of an internal bumper and the ability to enjoy a smooth ride without air pressure when not engaged in towing. For enthusiasts who require extensive air bag travel, especially beneficial for off-roading, towing, boat launching, or frequently adjusting the vehicle's rear height for trailer pickups, our HP10355-X ALPHA XD air bag is the perfect solution. This series offers a robust load leveling capacity of up to 7,500 lbs*, ensuring your vehicle remains stable and controlled under various conditions. Always be sure to adhere to the manufacturer's recommended Gross Vehicle Weight Rating for safety and optimal vehicle performance.


  • Built for durability and performance 
  • Max load leveling capacity: 7,500 lbs
  • Ideal for towing or hauling 
  • No drilling required
  • Doubled convoluted design
  • Limited lifetime warranty


  • 2 air springs
  • Corrosion resistant roll plates
  • Precision laser cut powder coated steel brackets
  • Grade 5 plated hardware
  • All accessories required for the perfect bolt on install
  • Comprehensive installation guide


  • Never exceed manufacturer's recommended Gross Vehicle Weight Rating
  • Not for commercial chassis cabs

Install Instructions

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