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Fabtech

Fabtech 17-20 Ford F250/350 4WD Diesel 4in Rear Box Kit

$272.33

On Backorder — Expected to ship by Jul 9, 2026

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Fits 2017-2025 Ford F-250/F-350. This rear lift block kit adds 5 inches of lift for your 4WD Diesel Super Duty.

Key Features

  • Fits 2017-2025 Ford F-250 Super Duty and 2017-2025 Ford F-350 Super Duty 4WD Diesel models.
  • This rear lift block kit adds 5 inches of lift to the rear of your vehicle.
  • Includes bump stop relocation brackets to properly position the bump stops with the new lift height.
  • Designed to integrate with Fabtech's 4-inch lift systems, like the Dirt Logic 4.0 Coilover Conversion.
  • Features rear Dirt Logic 2.25 stainless steel shocks, valved for a balanced on-road ride.
  • Bolt-on installation requires no welding or cutting.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

The rear of your 2017-2025 Ford F-250 or F-350 Super Duty can get a 5-inch lift with this rear block kit from Fabtech. This kit is designed to work with Fabtech's 4-inch lift systems, specifically the Dirt Logic 4.0 Coilover Conversion, to achieve the desired ride height and clearance. It includes a 5-inch lift block and bump stop relocation brackets, ensuring proper suspension geometry and function after the lift is installed.

This rear block kit is a key component for achieving a balanced lift on your Super Duty. The included bump stop relocation brackets are important for preventing the suspension from bottoming out harshly after the lift. The rear Dirt Logic 2.25 stainless steel shocks, which are part of the larger lift systems this kit is designed for, are valved to offer a comfortable on-road ride while still providing capable damping for off-road use.

This kit is intended to be installed as part of a larger Fabtech lift system, such as the PN K2228DL or K2227DL. It's a bolt-on installation, meaning no welding or cutting is required, making the process more straightforward. Fabtech backs this kit with a 5-year, 60,000-mile warranty.

Specifications

Brand
Fabtech
Manufacturer Part #
FTS22309
UPC
674866108417

Frequently Asked Questions

Fabtech 17-20 Ford F250/350 4WD Diesel 4in Rear Box Kit

$272.33