2019-2026 3.0L Duramax ZR2, Trail Boss & AT4 LoadLifter 5000 Ultimate Air Spring Kit (88388)

The LoadLifter 5000 Ultimate kit gives your half-ton Duramax up to 5,000 lbs of rear load-leveling capacity so towing and hauling stay level and stable. Fully adjustable air springs from 5 to 100 PSI let you dial in the right support for any load, eliminating squat, trailer sway, and bottoming out. What sets the Ultimate apart is the built-in internal jounce bumper, an Air Lift exclusive that absorbs shock and lets the springs run safely even at zero air pressure.

• Air springs fully adjustable from 5 to 100 PSI to level the truck when towing or hauling
• Up to 5,000 lbs of load-leveling capacity (do not exceed the vehicle's GVWR)
• Internal jounce bumper absorbs shock and prevents bottoming out
• Maintenance free; runs safely with zero air pressure
• Underframe kit designed to work with most in-bed hitches
• Rugged, durable air springs and all hardware included
• Easy to install with the included instructions (some vehicle modification required)
• Backed by Air Lift's Limited Lifetime Warranty and 60-day ride satisfaction guarantee

• Bellows color: Black
• Air lines included: Yes
• Fittings included: Yes

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