SKU: FTS22309 | UPC: 674866108417
Fabtech 2017-2026 Ford F-250/F-350 Super Duty 4WD Diesel 4in Rear Box Kit
Fabtech 4in Rear Box Kit upgrades the rear suspension on 2017-2026 Ford F-250/F-350 Super Duty 4WD diesel trucks with a 5in lift block, bump stop brackets, and Dirt Logic 2.25in shocks. This bolt-on kit centers the axle and balances the ride for daily driving and off-road demands. Paired with Fabtech front systems, it maintains near-zero caster change for stable control.
Key Features
- Dirt Logic 2.25in Shocks: Stainless steel body and NitroSteel rod resist corrosion while valved for firm on-road control and rugged off-road damping on Super Duty trucks
- 5in Lift Block: Provides exact 4in rear lift to level the truck after front coilover install, with integrated bump stop relocation for full suspension travel
- Bump Stop Brackets: Relocates factory bump stops to prevent damage during heavy articulation and load carrying
- Bolt-On Design: Direct fit for 2017-2026 F-250/F-350 4WD diesel with no cutting or welding required for fast install
- 5-Year Warranty: Backed by 60,000-mile coverage for long-term reliability in demanding conditions
Product Notes
- Requires Fabtech front Dirt Logic 4.0 coilover or radius arm system for complete 4in lift
- Shocks tuned specifically for diesel Super Duty weight and payload
- Packaged for protection during transit with all hardware included
Installation Notes
- Professional installation recommended.
- Bolt-on process takes 2-4 hours with basic tools and jack stands
- All necessary brackets and hardware provided for direct factory replacement
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017-2026 | Ford | F-250 Super Duty | King Ranch, Lariat, Platinum, XL, XLT |
| 2018-2024 | Ford | F-250 Super Duty | Limited |
| 2017-2026 | Ford | F-350 Super Duty | King Ranch, Lariat, Platinum, XL, XLT |
| 2018-2024 | Ford | F-350 Super Duty | Limited |
Why Choose Fabtech?
- Engineered suspension systems built for Ford Super Duty since 1992
- Stainless steel components ensure durability in harsh environments
- Precision design maintains factory geometry for safe handling
Frequently Asked Questions
- Q: Will this kit fit gas engine Super Duty models?
- A: Designed exclusively for 4WD diesel F-250/F-350 Super Duty due to specific rear axle and weight tuning
- Q: What material are the shocks made from?
- A: Dirt Logic 2.25in shocks feature stainless steel bodies and NitroSteel piston rods for maximum corrosion resistance
- Q: What is the warranty on this kit?
- A: Complete system covered by Fabtech 5-year/60,000-mile warranty when installed per instructions
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Single box dimensions 31in x 17in x 7in
- Weight: 52 lbs
Fabtech
Fabtech is a California-based suspension lift kit and off-road suspension manufacturer that has been engineering lift systems, control arms, sway bar disconnects, steering components, and performance shocks specifically for popular light trucks and SUVs since 1984. The brand's commitment to proper engineering, including in-field testing on real vehicles and multiple fit checks before releasing any kit, produces suspension systems that integrate cleanly with factory TPMS sensors, electronic stability control, and factory ABS systems that many cheaper lift kit manufacturers ignore. Fabtech lift kits for Ford F-150, F-250, F-350 Super Duty, Chevrolet Silverado, GMC Sierra, Toyota Tacoma, Ford Bronco, and Jeep Wrangler are among the most popular because the brand covers all major market truck platforms with model-year specific kits rather than generic universal designs. Serious off-road enthusiasts and truck owners who plan to run 33 to 40-inch tires with confidence that the suspension ...
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Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what the factory suspension provides. From lowering springs and coilover kits for sport handling to lift kits and leveling kits for truck and SUV off-road capability, quality suspension components transform how a vehicle rides and handles. Popular Suspension Upgrades Popular suspension upgrades include coilover kits for adjustable ride height and damping, sport lowering springs for improved handling and reduced body roll, performance shock absorbers and strut assemblies, sway bar and end link upgrade kits, subframe brace kits, and complete suspension packages for lifted trucks and off-road SUVs. Alignment kits including camber bolts and camber arms are also frequently ordered after ride height changes. What is the difference between coilovers and lowering springs? Coilovers are complete shock and spring assemblies with adjustable ride height set by threading the spring perch on the shock...
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