6-Inch Super Duty Lift Kit, Vertex Coilovers, 6.5-In Blocks
- Ford F-250 and F-350 Super Duty 2023-2025, 4WD
- Vertex Coilovers and a 6-inch coil box
- 6.5-Inch Blocks block and U-bolt set
- Supplied without the universal U-bolt kit
- Does NOT fit gas engine models or manual shift transfer cases
- Does NOT fit dually models or the Tremor Factory Trim Package
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas engine models
- Manual shift transfer cases
- Dually models
Models equipped with a 10-speed transmission must remove dial pin. 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 Super Duty Lift Kit, Vertex Coilovers, 6.5-In Blocks, fitment-checked
One of Rough Country's 6-inch Super Duty kits, and the kit contents are what separate them: this one carries Vertex 2.5 adjustable coilovers with the 6.5-inch block and U-bolt set listed with overloads. Vehicle coverage and exclusions are common to the whole group.
Adjustable damping on the taller block. Four Vertex 2.5 coilovers — two front, two rear, each specified for 6 inches — go in alongside the 6.5-inch block and U-bolt set listed with overloads. The coilovers account for most of the weight difference against the fixed-damper builds. A 6-inch coil box and a front CV drive shaft complete the kit. Shipping weight: 277.35 lb.
What’s in the box
Kit contents
- 1× 6 Inch Coil Box 9296
- 1× 6.5 In Block U-Bolt Kitoverloads 1550BOX2
- 1× Kit Box 43700992
- 1× CV Drive Shaft 5068.1
- 2× Vertex 2.5 FR 6 In 685754
- 2× Vertex 2.5 RR 6 In 695805
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 43851 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 43851 |
| UPC / GTIN | 00840269935367 |
| Shock package | Vertex series |
| Shipping weight | 277.35 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here