GMC Sierra 3500 Air Spring Kit - Air Lift - LoadLifter 7500 XL Ultimate - `16-`25 is a heavy-duty air spring system engineered for the 2016–2025 Sierra 3500 (also fits Silverado 3500). It provides adjustable load-leveling support to improve handling and ride quality while towing or hauling.

This LoadLifter 7500 XL Ultimate kit uses massive 7-inch, double‑convoluted bellows to deliver substantial leveling power at lower air pressures. The system is fully adjustable from 5–100 PSI so you can fine-tune ride height and firmness for different loads. Internal jounce bumpers absorb shock and can be run safely at zero PSI for protection during heavy impacts. Designed as an underframe kit to work with most in‑bed hitches, it helps reduce squat, trailer sway, poor headlight aim, body roll, and bottoming out when carrying heavy payloads. Components are two‑ply fabric reinforced and backed by Air Lift’s limited lifetime warranty and a 60‑day ride satisfaction guarantee.

Features

• Massive 7" double‑convoluted bellows for greater leveling power
• Up to 7,500 lbs. of load‑leveling capacity (do not exceed GVWR)
• Fully adjustable 5–100 PSI for precise ride control
• Internal jounce bumper can be run at zero PSI
• Underframe design works with most in‑bed hitches; requires 9" frame‑to‑tire clearance
• Two‑ply fabric reinforced air springs
• Limited lifetime warranty with 60‑day ride satisfaction guarantee

If you have questions or want help confirming fitment, call us directly — we’re happy to walk you through details: 512-982-9393 (TX) or 562-981-6800 (CA). We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area, and we install on premises at both locations. If you’re thinking about purchasing multiple items, contact us for possible shipping discounts.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov