6-Inch Vertex Lift Kit for Ford Super Duty 4WD (2017-2022) — Part 51758
- Fits 2017-2022 Ford F-250 and F-350 Super Duty 4WD diesel models — review every exclusion below
- Does not fit gas engines, dually axles, manual-shift transfer cases, or Tremor package trucks; requires factory rear contact overload springs
- Kit includes Vertex 2.5 adjustable front coilovers (4.5-6 in range), V2 monotube rear shocks, and a front CV driveshaft
- Fabricated anti-axle-wrap rear blocks with U-bolt kit; radius arm drop brackets for correct caster
- Bolt-on installation — 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 ONLY fits models equipped with rear factory contact overload springs
Does NOT work on models equipped with Tremor Factory Trim Package. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Vertex Lift Kit, fitment-checked
Rough Country 51758 is a 6-inch lift kit for 2017-2022 Ford F-250 and F-350 Super Duty 4WD diesel models, built around Vertex 2.5 adjustable front coilovers and a V2 monotube rear shock pair. It does not fit gas-engine trucks, dually axles, manual-shift transfer cases, or the Tremor factory trim package, and the truck must have the factory rear contact overload springs.
This 6-inch lift kit for the 2017-2022 Ford F-250/F-350 Super Duty 4WD covers XL through Limited trims, including King Ranch, Lariat, Platinum, and XLT, on diesel models only. The box carries left- and right-hand Vertex 2.5 adjustable front coilovers set for the 4.5 to 6-inch range, a front CV driveshaft, a V2 monotube shock pair, fabricated rear blocks with U-bolt hardware, and radius arm drop brackets that let caster be set correctly for factory-like steering feel. Confirm your engine, axle, and transfer case against the exclusion list, then work through the downloadable installation guide before you start.
What’s in the box
Kit contents
- 1× CV Drive Shaft 5068.1
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7675
- 1× V2 MONOTUBE SHOCK PAIR 760805-2
- 1× Kit Box 1504991
- 1× 6" Kit Box 50010991
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× Vertex 2.5 Adj FR Lh 4.5IN-6.IN 685042L
- 1× Vertex 2.5 Adj FR Rh 4.5IN-6.IN 685042R
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 51758 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 51758 |
| UPC / GTIN | 00840269914997 |
| Lift height | 6 in |
| Shock package | Vertex series |
| Shipping weight | 292.3 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here