6-Inch Vertex Lift Kit for Ford Super Duty 4WD (2017–2022) for Trucks with Overloads
- Fits 2017–2022 Ford F-250 and F-350 Super Duty 4WD in XL, XLT, Lariat, King Ranch, Platinum, and Limited trims — check the exclusion list
- Excludes dually trucks, manual-shift transfer cases, gas engines, 4-inch rear axle tubes, and the Tremor package; the feed note also flags F-350
- Requires factory contact overload springs at the rear
- Vertex 2.5 front and rear shocks, 6-inch coils, radius arm drop brackets, transfer case clocking kit, and 6.5-inch fabricated blocks with U-bolts
- Bolt-on installation with a downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Dually models
- Manual shift transfer cases Does NOT fit gas engine models
- Models with 4" rear axle tube ONLY fits models equipped with rear factory contact overload springs Does NOT work on models equipped with Tremor Factory Trim Package
Does NOT F-350 models. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Vertex Lift Kit for Ford Super Duty 4WD (2017–2022), fitment-checked
Rough Country 51250 is a 6-inch lift kit for 2017–2022 Ford F-250 and F-350 Super Duty 4WD trucks, built around Vertex 2.5 coilover-style front and rear shocks, coils, radius arm drop brackets, a transfer case clocking kit, and fabricated rear blocks with U-bolts. It is limited to diesel models with factory contact overload springs — dually, manual-shift transfer case, gas engine, 4-inch rear axle tube, and Tremor trucks are excluded.
This 6-inch lift kit for the 2017–2022 Ford Super Duty 4WD ships with Vertex 2.5 front and rear shocks, a 6-inch coil box, a radius arm kit with two upgrade boxes, a transfer case clocking kit, and a 6.5-inch block and U-bolt package. The radius arm drop brackets let you reset caster so steering behavior stays close to factory, and the anti-axle-wrap rear blocks are fabricated rather than cast. Confirm engine, axle tube, transfer case, and overload spring details against the exclusion list first, then work from the downloadable Rough Country installation guide.
What’s in the box
Kit contents
- 1× 6 Inch Coil Box 9296
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× Radius Arm Kit Box 512BOX1
- 1× Transfer Case Clocking Kit 55003
- 2× Vertex 2.5 FR 6 In 685754
- 2× Vertex 2.5 RR 6 In 695805
- 1× Radius Arm Upgrade Box 53600991A
- 1× Radius Arm Upgrade Box 53600992A
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 51250 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 51250 |
| UPC / GTIN | 00843030190149 |
| Lift height | 6 in |
| Shock package | Vertex series |
| Shipping weight | 337.62 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here