4.5-Inch Vertex Coilover Lift Kit for Ford Super Duty 4WD (2017–2022)
- Fits 2017–2022 Ford F-250 and F-350 Super Duty 4WD in XL, XLT, Lariat, King Ranch, Platinum, and Limited trims
- Vertex 2.5 adjustable front coilovers (left and right) plus a V2 monotube rear shock pair
- Fabricated rear blocks with U-bolt kit, radius arm drop brackets for caster correction, and a transfer case clocking kit
- Not for gas engines, dually axles, manual-shift transfer cases, or the Tremor Factory Trim Package; requires factory rear contact overload springs
- 10-speed transmission trucks: the dial pin must come out during installation
- Downloadable installation guide available; shipping weight: 252 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Gas engine models
- Dually models
- Manual shift transfer cases ONLY fits models equipped with rear factory contact overload springs
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
4.5-Inch Vertex Coilover Lift Kit, fitment-checked
Rough Country 55056 is a 4.5-inch lift kit for 2017–2022 Ford F-250 and F-350 Super Duty 4WD models, built around adjustable Vertex 2.5 front coilovers and a V2 monotube rear shock pair. It only suits diesel trucks with factory rear contact overload springs — gas, dually, manual-shift transfer case, and Tremor Factory Trim Package trucks are outside the fitment.
This 4.5-inch lift kit for the 2017–2022 Ford F-250 and F-350 Super Duty 4WD covers XL through Limited trims listed in the fitment section. Left and right Vertex 2.5 adjustable front coilovers handle the front lift, a V2 monotube pair goes in back, and fabricated anti-axle-wrap rear blocks ship with matching U-bolts to keep the factory ride manner intact. Radius arm drop brackets reset caster so steering feel stays close to stock, and a transfer case clocking kit is part of the package. Trucks with the 10-speed transmission need the dial pin removed. Confirm the exclusion list before ordering.
What’s in the box
Kit contents
- 1× Transfer Case Clocking Kit 55003
- 1× V2 MONOTUBE SHOCK PAIR 760805-2
- 1× 4.5" Kit Box 50011991
- 1× Kit Box 1550BOX1
- 1× Block U-Bolt 4.5in Kit 1550BOX3
- 1× Vertex 2.5 Adj FR Lh 4.5IN-6.IN 685042L
- 1× Vertex 2.5 Adj FR Rh 4.5IN-6.IN 685042R
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55056 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55056 |
| UPC / GTIN | 00840269919473 |
| Lift height | 4.5 in |
| Shock package | Vertex series |
| Shipping weight | 252 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here