The Air Lift LoadLifter 5000 Ultimate is a rear load-leveling helper air spring kit for the 2024-2026 Chevrolet Silverado 2500HD ZR2 and GMC Sierra 2500HD AT4X (4WD). It adds up to 5,000 lbs of leveling capacity with double-bellows air springs adjustable from 5-100 PSI to control squat, trailer sway, and bottoming out when towing or hauling. An internal closed-cell jounce bumper lets the springs run safely at zero PSI, and the included Air Spring Cradles let the springs detach from the lower bracket for full suspension extension off-road. The underframe kit bolts on with no frame drilling and works with most in-bed hitches.
| Type | Rear load-leveling helper air spring kit (LoadLifter 5000 Ultimate) |
| Capacity | Up to 5,000 lbs |
| Pressure Range | 5-100 PSI |
| Air Spring | Double-bellows |
| Jounce Bumper | Internal closed-cell bumper - safe at zero PSI |
| Mounting | Underframe bolt-on - no frame drilling - works with most in-bed hitches |
| Includes | Air Spring Cradles for full suspension extension |
| Part Number | 88408 |
| Warranty | Limited lifetime - 60-day ride satisfaction guarantee |
| Fitment | 2024-2026 Chevrolet Silverado 2500HD ZR2 and GMC Sierra 2500HD AT4X (4WD) |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2024-2026 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2024-2026 | GMC | Sierra 2500 HD | AT4X |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
