6-Inch Lift Kit with Vertex Coilovers for Super Duty 4WD (2017–2022) — Part 51356
- Fits 2017–2022 Ford F-250 and F-350 Super Duty 4WD, XL through Limited — see full fitment list
- Does not fit gas engine, dually, manual shift transfer case, or Tremor Factory Trim Package trucks; rear factory contact overload springs required
- Coilover conversion with Vertex 2.5 adjustable front units covering the 4.5-to-6-inch range, plus a V2 monotube shock pair
- Radius arm drop brackets set caster back where the factory geometry wants it
- Downloadable installation guide available for both the kit and the coilover portion
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 Lift Kit with Vertex Coilovers, fitment-checked
Rough Country 51356 is a 6-inch lift kit for 2017–2022 Ford F-250 and F-350 Super Duty 4WD trucks, built around a coilover conversion with Vertex 2.5 adjustable front units and a V2 monotube shock pair. It does not fit gas engine models, dually models, manual shift transfer cases, or trucks with the Tremor Factory Trim Package, and it requires rear factory contact overload springs.
This 6-inch lift kit for the 2017–2022 Ford F-250 and F-350 Super Duty 4WD covers XL, XLT, Lariat, King Ranch, Platinum, and Limited trims. The box carries left and right Vertex 2.5 adjustable front coilovers rated for the 4.5-to-6-inch range, a V2 monotube shock pair for the rear, a transfer case clocking kit, a 4.5-inch rear block and U-bolt package, and a universal U-bolt kit. Fabricated rear blocks are shaped to resist axle wrap. Check the engine, axle, transfer case, and trim exclusions against your truck before ordering, then work from the downloadable installation guide.
What’s in the box
Kit contents
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7673
- 1× Transfer Case Clocking Kit 55003
- 1× V2 MONOTUBE SHOCK PAIR 760805-2
- 1× Kit Box 1504991
- 1× 6" Kit Box 50010991
- 1× 4.5 In Block U-Bolt Kit No Overloads 1563BOX4
- 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 51356 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 51356 |
| UPC / GTIN | 00840269915307 |
| Lift height | 6 in |
| Shock package | Vertex series |
| Shipping weight | 281.3 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here