6-Inch Vertex Coilover Kit for Super Duty, Front & Rear
- Ford F-250 and F-350 Super Duty 2023-2025, 4WD
- Vertex 2.5 adjustable coilovers at BOTH ends
- 6.5-inch rear block and U-bolt set
- 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 Vertex Coilover Kit, fitment-checked
The most adjustable of the Super Duty coil kits: Vertex 2.5 units front and rear at 6 inches of lift, on the 6.5-inch rear block.
Two axes are set at their upper positions here — 6 inches rather than 4.5, and Vertex 2.5 adjustable units at both ends rather than only the front. The front pair is matched left and right; the rear is a pair of Vertex 2.5 units in place of the monotube shocks the other conversions retain. The rear block and U-bolt set is the 6.5-inch version. Fitment is identical across the whole range, so read the 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
- 2× Vertex 2.5 RR 6 In 695805
- 1× V2 MONOTUBE SHOCK PAIR 760818-2
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 400259 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 400259 |
| UPC / GTIN | 00840269972522 |
| Shock package | Vertex series |
| Shipping weight | 165 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here