6-Inch Lift Kit with M1 Shocks for 2017-2022 Ford Super Duty 4WD with Control Arms
- Fits 2017-2022 Ford F-250 and F-350 Super Duty 4WD — check the full exclusion list before ordering
- Excludes gas engine, dually, manual shift transfer case, and Tremor Factory Trim Package trucks
- Only for models with factory contact overload springs in the rear; not for a 3.5 in rear axle tube
- Includes two M1 monotube shock pairs, 4.5-6in upper and lower arms, and a transfer case clocking kit
- Fabricated rear block replaces the factory block and works against axle wrap
- Downloadable installation guide available — shipping weight: 328.0 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas engine models
- Manual shift transfer cases Does NOT fit dually models
- Models with 3.5" rear axle tube ONLY fit models equipped with rear factory contact overload springs New fabricated lift block replaces the factory equipped lift block
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 M1 Shocks, fitment-checked
Rough Country 50840 is a 6-inch lift kit for 2017-2022 Ford F-250 and F-350 Super Duty 4WD diesel models, built around two M1 monotube shock pairs, radius arm drop brackets, upper and lower arms, a transfer case clocking kit, and fabricated rear blocks with U-bolts. Gas engine, dually, manual shift transfer case, and Tremor Factory Trim Package trucks are not covered.
This 6-inch lift kit for the 2017-2022 Ford Super Duty 4WD covers F-250 and F-350 in XL, XLT, Lariat, King Ranch, Platinum, and Limited trim. The box ships as a bolt-on package: 4.5-6in upper and lower arm kits, a 6 inch coil box, a transfer case clocking kit, a 6.5 In block and U-bolt set, and M1 monotube shocks front and rear. Fitment is limited to trucks with factory contact overload springs in the rear; trucks with a 3.5 in rear axle tube are excluded. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× 56020 Box Kit 1560BOX1
- 1× 4.5-6in Up Arm Kit 1560BOX2
- 1× 4.5-6in Lower Arms 1560BOX3
- 1× Transfer Case Clocking Kit 55003
- 1× M1 MONOTUBE SHOCK PAIR 770754P
- 1× M1 MONOTUBE SHOCK PAIR 770805P
- 1× Univ. 3 4 X 4 1 X 1 2in U-Bolt Kit 7675
- 1× 6 Inch Coil Box 9296
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 50840 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 50840 |
| UPC / GTIN | 00840269917646 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 328 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here