F-250 / F-350 / F-450 2017–2019 LoadLifter 7500 XL Helper Spring Kit | Air Lift 57577

Built for a Super Duty that tows and hauls at the top of its rating. The Air Lift LoadLifter 7500 XL kit (part #57577) uses massive 7-inch double-convoluted air springs to add up to 7,500 lbs of rear load-leveling capacity on 2017–2019 F-250, F-350, and F-450 4WD trucks. That is about 20% more air volume than a LoadLifter 5000 bag, so you get more support at lower pressure and less squat, trailer sway, and bottoming out. This kit also includes an internal jounce bumper to absorb shock and help protect the truck if a bag loses air. Air pressure is fully adjustable from 5–100 PSI.

Key features

• Up to 7,500 lbs of load-leveling capacity (never exceed the truck’s GVWR)
• About 20% more air-spring volume than LoadLifter 5000 bags
• 7-inch double-convoluted bellows for heavy towing and hauling
• Internal jounce bumper for added bottom-out protection
• Adjustable from 5–100 PSI for empty, partial, or max-load conditions
• 2-ply fabric-reinforced rubber construction
• Exclusive upper and lower roll plates protect the bags and help increase capacity
• Corrosion-proof nylon composite end caps that are steel-strong, lighter, and rust-free
• Fits factory in-bed hitch systems and most fifth-wheel or gooseneck setups
• Fits both single rear wheel (SRW) and dual rear wheel (DRW)
• Under-frame, no-drill installation on most applications
• Quick-connect air fittings with included air line and Schrader valve
• Limited lifetime warranty

Fitment

• 2017–2019 Ford F-250 Super Duty 4WD
• 2017–2019 Ford F-350 Super Duty 4WD
• 2017–2019 Ford F-450 Super Duty 4WD pickup
• Compatible with 6.7 Powerstroke diesel and gas engines
• Rear axle / factory leaf springs

Does not fit commercial cab-and-chassis trucks.

What’s in the box

• Pair of LoadLifter 7500 XL air springs
• Upper and lower roll plates
• Vehicle-specific mounting brackets and hardware
• Air line, fittings, and Schrader fill valve
• Illustrated installation manual

Notes & specs

• Compressor, in-cab gauges, and wireless controllers are not included
• Pair this kit with an Air Lift WirelessONE, LoadController, or similar onboard air system if you want to adjust pressure from the cab
• Brand/part number: Air Lift LoadLifter 7500 XL 57577
• UPC: 729199575778
• Position: rear
• Capacity: up to 7,500 lbs
• Pressure range: 5–100 PSI
• Bellow size: 7-inch double-convoluted
• Mount: under-frame
• Drilling: typically none
• Install time: about 2 hours
• Replacement spring: Air Lift 50236
• Kit weight: about 57 lbs
• Warranty: limited lifetime

Most 57577 kits bolt on with no frame drilling. Route the included air line to a convenient fill point at the bumper, bed, or license-plate area. Always set pressure for the load you are carrying and do not exceed the vehicle manufacturer’s GVWR. If your 2017–2019 F-250, F-350, or F-450 4WD squats under a fifth-wheel, gooseneck, or heavy bed load, the Air Lift 57577 LoadLifter 7500 XL kit adds 7,500 lbs of adjustable rear support.