6-Inch Lift Kit with Vertex Shocks for Ford Super Duty 4WD (2017–2022) — Part 51351
- Fits compatible 2017-2022 Ford F-250 and F-350 Super Duty 4WD trucks — check the full exclusion list below
- Kit includes 2 Vertex 2.5 front and 2 Vertex 2.5 rear shocks tuned for this 6-inch application
- Also supplies a 4.5 in rear block and U-bolt kit (no overloads), universal U-bolt kit, coil package, and a front diesel CV driveshaft
- Excluded: gas engine, dually, manual shift transfer case, 3.5-inch rear axle tube, factory contact rear overload springs, and Tremor trim trucks
- Bolt-on installation with radius arm drop brackets for correct caster; downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas engine models
- Dually models
- Manual shift transfer cases Does NOT fit models with 3.5" rear axle tube Does NOT fit models equipped with rear factory contact overload springs Does NOT work on models equipped with Tremor Factory Trim Package
About this kit
6-Inch Lift Kit with Vertex Shocks, fitment-checked
Rough Country 51351 is a 6-inch lift kit for compatible 2017-2022 Ford F-250 and F-350 Super Duty 4WD models, built around Vertex 2.5 front and rear shocks, a fabricated rear block and U-bolt package, and a front CV driveshaft. It does not fit gas-engine, dually, manual-shift transfer case, or Tremor Factory Trim Package trucks.
This 6-inch lift kit for the 2017-2022 Ford F-250/F-350 Super Duty 4WD covers XL through Limited trims listed in the fitment section, including King Ranch, Lariat, Platinum, and XLT. Radius arm drop brackets set caster so steering behavior stays close to factory, and the rear blocks are fabricated rather than cast to resist axle wrap. Read the exclusion list closely first: gas engines, dual-rear-wheel trucks, manual-shift transfer cases, 3.5-inch rear axle tubes, factory contact overload springs, and Tremor-package trucks are all out. A downloadable Rough Country installation guide is available before you start.
What’s in the box
Kit contents
- 1× 6 Inch Coil Box 9296
- 1× 4.5 In Block U-Bolt Kit No Overloads 1563BOX4
- 1× Kit Box 1504991
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7673
- 1× CV Drive Shaft 5068.1
- 2× Vertex 2.5 FR 6 In 685754
- 2× Vertex 2.5 RR 6 In 695805
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 51351 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 51351 |
| UPC / GTIN | 00843030169879 |
| Lift height | 6 in |
| Shock package | Vertex series |
| Shipping weight | 292.74 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here