6-Inch Lift Kit with N3 Shocks for 2017–2022 Ford Super Duty 4WD — Part 55430
- Fits 2017–2022 Ford F-250 and F-350 Super Duty 4WD in XL through Limited trims — check the fitment list
- Diesel only: does not fit gas engines, dually models, manual-shift transfer cases, 3.5" rear axle tubes, or the Tremor trim package
- Requires factory rear contact overload springs on the truck
- Kit contents include coils, N3 shocks, radius arm kit and drop brackets, 6.5-inch fabricated rear blocks, U-bolts, and a transfer case clocking kit
- 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 Does NOT fit models with 3.5" rear axle tube ONLY fits 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
Rough Country 55430 is a 6-inch lift kit for 2017–2022 Ford F-250 and F-350 Super Duty 4WD models, built around N3 series shocks, coils, radius arm drop brackets, and fabricated rear blocks. It is diesel-only: gas engines, dually axles, manual-shift transfer cases, 3.5" rear axle tubes, and the Tremor trim package are all outside its fitment, and the truck must have factory rear contact overload springs.
This 6-inch lift kit for the 2017–2022 Ford F-250/F-350 Super Duty 4WD covers XL, XLT, Lariat, King Ranch, Platinum, and Limited trims listed in the fitment section. The radius arm drop brackets let you reset caster so steering and road manners stay close to factory, and the rear blocks are made to resist axle wrap rather than introduce it. Read the exclusion list closely before ordering — engine, axle, transfer case, and overload spring configuration all decide whether your truck qualifies. A downloadable Rough Country installation guide is available to review before you start.
What’s in the box
Kit contents
- 1× 6 Inch Coil Box 9296
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× Radius Arm Kit Box 512BOX1
- 1× N3 Shock Kit 155030
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7675
- 1× Transfer Case Clocking Kit 55003
- 1× Radius Arm Upgrade Box 53600991A
- 1× Radius Arm Upgrade Box 53600992A
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55430 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55430 |
| UPC / GTIN | 00843030190118 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 321.52 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here