4.5-Inch Lift Kit with M1 Shocks for F-350 Super Duty 4WD
- Fits compatible 2017-2022 Ford F-350 Super Duty 4WD trims from XL to Limited — check the full exclusion list first
- Excludes gas engines, single rear wheel trucks, manual shift transfer cases, Tremor package trucks, and 2020 trucks with the 10-speed transmission
- Kit contents: two M1 monotube shock pairs, 5-degree front coils, fabricated dually block and 4.5-inch U-bolt set, transfer case clocking kit
- Rear wheels may call for dually wheel spacers — verify your wheel setup before ordering
- Bolt-on installation; downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas engine models
- Single rear wheel models
- Manual shift transfer cases Does NOT work on models equipped with Tremor Factory Trim Package Does NOT fit 2020 models with 10-speed transmission
About this kit
4.5-Inch Lift Kit with M1 Shocks, fitment-checked
Rough Country 55940 is a 4.5-inch lift kit for compatible 2017-2022 Ford F-350 Super Duty 4WD models, built around two pairs of M1 monotube shocks, a 5-degree front coil set, fabricated rear blocks with 4.5-inch U-bolts, and a transfer case clocking kit. Diesel and dual-rear-wheel models only.
This 4.5-inch lift kit for the 2017-2022 Ford F-350 Super Duty 4WD raises the front to sit level with the rear while adding ground clearance, and the included radius arm drop brackets keep caster set where the factory geometry wants it. Covered trims run XL and XLT through Lariat, King Ranch, Platinum, and Limited. It will not work on gas engines, single rear wheel trucks, manual shift transfer cases, Tremor package trucks, or 2020 models with the 10-speed transmission. Rear dually wheel spacers may be needed. A downloadable Rough Country installation guide is available before you start.
What’s in the box
Kit contents
- 1× Kit Box 1550BOX1
- 1× Transfer Case Clocking Kit 55003
- 1× Drw Block U-Bolt 4.5in Kit 55900BOX1
- 1× M1 MONOTUBE SHOCK PAIR 770754P
- 1× M1 MONOTUBE SHOCK PAIR 770805P
- 1× Coil 5d 9297
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55940 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55940 |
| UPC / GTIN | 00840269917981 |
| Lift height | 4.5 in |
| Shock package | M1 series |
| Shipping weight | 207 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here