6-Inch Lift Kit with N3 Shocks for 2017–2022 Ford Super Duty 4WD — Part 50321
- Fits compatible 2017–2022 Ford F-250 and F-350 Super Duty 4WD trims from XL to Limited — review every exclusion below
- Diesel only: does not fit gas engines, dually axles, manual-shift transfer cases, 4-inch rear axle tubes, or the Tremor Factory Trim Package
- Requires factory rear contact overload springs; the exclusion list also names F-350 models, so verify against the fitment table
- Kit contents: 6-inch front coils, 6.5-inch rear blocks with U-bolts, N3 shock kit, front CV driveshaft
- Bolt-on install with radius arm drop brackets for caster correction — 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 Lift Kit with N3 Shocks, fitment-checked
Rough Country 50321 is a 6-inch lift kit for compatible 2017–2022 Ford Super Duty 4WD diesel trucks. The kit pairs front coils and fabricated anti-axle-wrap rear blocks with N3 series shocks and a front CV driveshaft. Gas-engine, dually, manual-shift transfer case, and Tremor Factory Trim Package trucks are excluded, and the truck must have factory rear contact overload springs.
This 6-inch lift kit for the 2017–2022 Ford Super Duty 4WD ships as a boxed package: a 6-inch front coil set, a 6.5-inch fabricated rear block and U-bolt kit for overload-equipped axles, application-valved N3 shocks, and a front CV driveshaft for diesel models. Radius arm drop brackets let you reset caster so steering feel stays close to factory. Confirm the exclusions first — gas engines, duallys, manual-shift transfer cases, 4-inch rear axle tubes, and Tremor trucks are out, and the exclusion list also calls out F-350 models, so check the fitment table for your configuration. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× 6 Inch Coil Box 9296
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× Kit Box 1504991
- 1× N3 Shock Kit 155030
- 1× CV Drive Shaft 5068.1
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 50321 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 50321 |
| UPC / GTIN | 00843030169824 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 232.25 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here