6-Inch Coilover Conversion for Super Duty, V2 Rear
- Ford F-250 and F-350 Super Duty 2023-2025, 4WD
- Front coilover conversion: Vertex 2.5 adjustable, left and right
- Rear stays on V2 monotube shocks; 6.5-inch rear block
- Does NOT fit gas engine, dually or Tremor Off-Road Package models
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Models equipped with a gas engine
- Dually models
Does NOT ft models equipped with Tremor Off-Road Package as they are equipped with approximately a 1.5-inch factory lift. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Coilover Conversion, fitment-checked
The 6-inch version of the front-only coilover conversion: Vertex 2.5 adjustable units at the front, V2 monotube shocks at the rear, on a 6.5-inch block.
Height and block change together on these kits. Stepping from 4.5 inches to 6 brings a 6.5-inch block and U-bolt set at the rear in place of the 4.5-inch one, while the damping arrangement stays as it was: matched left and right Vertex 2.5 coilovers converting the front, and V2 monotube shocks left at the rear. If you want adjustment at the back too, that is a different part number. Shipping weight: 165 lb.
What’s in the box
Kit contents
- 1× Vertex 2.5 Adj FR Lh 4.5IN-6.IN 685042L
- 1× Vertex 2.5 Adj FR Rh 4.5IN-6.IN 685042R
- 1× 6.5 In Block U-Bolt Kit 41200992
- 1× Kit Box 400130992
- 1× 6" Kit Box 400258991
- 1× V2 MONOTUBE SHOCK PAIR 760805-2
- 1× V2 MONOTUBE SHOCK PAIR 760818-2
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 400258 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 400258 |
| UPC / GTIN | 00840269972492 |
| Shipping weight | 165 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here