Air Lift – LoadLifter 7500 XL Ultimate Rear Air Spring Kit – 2017–2022 Ford Super Duty 4WD – 57577

The Air Lift LoadLifter 7500 XL Ultimate Air Spring Kit (57577) is engineered for extreme towing and hauling on 2017–2022 Ford Super Duty trucks, delivering up to 7,500 lbs. of load-leveling capacity. Designed for serious work and heavy trailers, this rear air spring system helps eliminate squat, reduce trailer sway, improve braking performance, and prevent bottoming out under heavy loads.

As part of Air Lift’s Ultimate series, this kit features an internal jounce bumper, allowing the air springs to be safely operated at zero PSI without damage. This provides full-time suspension support and protection even when unloaded. By leveling heavy loads with less air pressure, the LoadLifter 7500 XL Ultimate improves ride comfort while reducing strain on factory suspension components.

Installation is bolt-on with no drilling required, and the system is compatible with factory in-bed hitch systems, making it an excellent solution for towing and work-duty Ford Super Duty applications.

Key Features

• Up to 7,500 lbs. of load-leveling capacity*
• Reduces squat, trailer sway, rough ride, and bottoming out
• Internal jounce bumper absorbs shock and allows safe 0 PSI operation
• Provides full-time load support
• Levels heavy loads with less air pressure for improved ride quality
• Improves braking performance and vehicle stability
• Designed for heavy-duty towing and hauling
• No drilling required for installation
• Rear air spring kit

Fitment

Fits the following vehicles (4WD):

• 2017–2019 Ford F-250 Super Duty (SRW & DRW)

• 2017–2019 Ford F-350 Super Duty (SRW & DRW)

• 2017–2022 Ford F-450 Super Duty

Fitment Notes:

• Fits Single Rear Wheel (SRW) and Dual Rear Wheel (DRW) models

• Compatible with factory in-bed hitch systems

• Does NOT fit commercial / cab & chassis applications

Specifications

• Part Number: 57577

• Series: LoadLifter 7500 XL Ultimate

• Application Type: Rear Kit

• Load-Leveling Capacity: Up to 7,500 lbs.*

• Replacement Air Spring: 50236

• Drilling Required: No

Dimensions & Weight:

• Weight: 57.2 lb

• Width: 17 in

• Depth: 12 in

• Height: 10 in

*Load-leveling capacity is based on air spring system capacity and does not increase GVWR.
**Internal jounce bumper allows zero-PSI operation without damage.