6-Inch Lift Kit with M1 Shocks for 2008–2010 Ford F-250/F-350 4WD
- Fits compatible 2008–2010 Ford F-250 Super Duty and F-350 Super Duty 4WD, plus 2008-2009 F-250 4WD
- Does not fit dually models or diesel engine models
- Rear overload leafs, if fitted, must be removed during installation
- Kit contents include 6in upper arm kit, 6in lower arms, 6 inch front coils, add-a-leaf, 3 Inch Block & U-Bolt Kit, and two M1 monotube shock pairs
- Radius arm drop brackets included to set proper caster
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Dually models
- Diesel engine models
If vehicle is equipped with rear overload leaf's they will need to be removed. 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 58840 is a 6-inch lift kit for compatible 2008–2010 Ford F-250 Super Duty and F-350 Super Duty 4WD trucks, built around upper and lower arm kits, a 6-inch front coil package, an add-a-leaf, a 3-inch rear block and U-bolt kit, and two M1 monotube shock pairs. It does not fit dually models or diesel engine models.
This 6-inch lift kit for the 2008–2010 Ford F-250/F-350 Super Duty 4WD covers XL through Lariat, King Ranch, FX4, Cabela's, and Harley-Davidson Edition trims listed in the fitment section, plus 2008-2009 F-250 XL and XLT. Radius arm drop brackets let you set caster back where the factory geometry wants it, and the rear is handled with an add-a-leaf plus a 3-inch block and U-bolt kit. Trucks with rear overload leafs require those leafs to be taken out during the build. Bolt-on installation, and a downloadable Rough Country installation guide is available.
What’s in the box
Kit contents
- 1× 6in Up Arm Kit 1580 BOX 1
- 1× 6in Lower Arms 1580 BOX 2
- 1× 584s Kit Box 1584BOX1
- 1× Add-A-Leaf 6111
- 1× 3 Inch Block & U-Bolt Kit 6539
- 1× M1 MONOTUBE SHOCK PAIR 770754P
- 1× M1 MONOTUBE SHOCK PAIR 770762P
- 1× 6 Inch Coil Box 9296
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 58840 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 58840 |
| UPC / GTIN | 00840269918223 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 255 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here