6-Inch Lift Kit with M1 Shocks for Ford Super Duty 4WD (2017-2022) — Part 52640
- Fits compatible 2017-2022 Ford F-250 Super Duty 4WD trucks in XL through Limited trim — review all exclusions below
- Does not fit F-350, gas-engine, dually, or Tremor Factory Trim Package models
- Also excludes manual-shift transfer cases, 4 in rear axle tubes, and rear factory contact overload springs
- M1 monotube shocks front and rear, plus a fabricated rear lift block that replaces the factory unit
- Radius arm drop brackets included to reset caster; downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- F-350 models
- Gas engine models
- Manual shift transfer cases Does NOT fit dually models
- Models with 4" rear axle tube Does NOT 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 52640 is a 6-inch lift kit for compatible 2017-2022 Ford Super Duty 4WD trucks, built around M1 monotube shocks, upper and lower arm kits, and a fabricated rear block with U-bolts. It does not fit F-350, gas-engine, dually, manual-shift transfer case, or Tremor Factory Trim Package models, or trucks with a 4 in rear axle tube or factory contact overload springs.
This 6-inch lift kit for the 2017-2022 Ford Super Duty 4WD arrives as a complete package: front coils, 4.5-6 in upper and lower arm assemblies, a transfer case clocking kit, two M1 monotube shock pairs, and a 4.5 in rear block with U-bolts for trucks without overloads. The fabricated rear block replaces the factory block. Radius arm drop brackets set caster back where it belongs, so steering feel stays close to stock. Check every exclusion below against your build sheet, then work from the downloadable Rough Country installation guide.
What’s in the box
Kit contents
- 1× 56020 Box Kit 1560BOX1
- 1× 4.5-6in Up Arm Kit 1560BOX2
- 1× 4.5-6in Lower Arms 1560BOX3
- 1× 4.5 In Block U-Bolt Kit No Overloads 1563BOX4
- 1× Transfer Case Clocking Kit 55003
- 1× M1 MONOTUBE SHOCK PAIR 770754P
- 1× M1 MONOTUBE SHOCK PAIR 770805P
- 1× 6 Inch Coil Box 9296
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 52640 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 52640 |
| UPC / GTIN | 00840269917721 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 295 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here