6-Inch Lift Kit with N3 Shocks for Ford Super Duty 4WD (2017-2022) — Part 51320
- Fits 2017-2022 Ford F-250 and F-350 Super Duty 4WD in the trims listed below
- Diesel only — does not fit gas engines, duallys, or manual shift transfer cases
- Not for 3.5-inch rear axle tubes, factory contact overload springs, or the Tremor trim package
- Kit contents: 6-inch coil package, N3 shock kit, 4.5-inch fabricated rear blocks, U-bolts, transfer case clocking kit
- Radius arm drop brackets included to reset caster for near-factory steering feel
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 N3 Shocks, fitment-checked
N3 shocks anchor this 6-inch lift kit for 2017-2022 Ford F-250 and F-350 Super Duty 4WD (Rough Country 51320). Diesel-only fitment: gas engines, duallys, manual shift transfer cases, 3.5-inch rear axle tubes, factory contact overload springs, and the Tremor package are all outside the fitment.
Built around application-valved N3 series shocks, this 6-inch lift kit for the 2017-2022 Ford F-250 and F-350 Super Duty 4WD fits XL, XLT, Lariat, King Ranch, Platinum, and Limited trims shown in the fitment section. Inside the box: a 6-inch front coil package, a 4.5-inch fabricated rear block and U-bolt kit for models without overloads, universal U-bolts, and a transfer case clocking kit. The fabricated rear blocks are shaped to limit axle wrap, and radius arm drop brackets bring caster back into spec. Check engine, axle tube, and transfer case configuration against the exclusion list, then follow the downloadable installation guide.
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× N3 Shock Kit 155030
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7673
- 1× Transfer Case Clocking Kit 55003
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 51320 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 51320 |
| UPC / GTIN | 00843030141059 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 254.3 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here