6-Inch Lift Kit for Ford F-150 (2015-2020)
- Ford F-150 2015-2020, 4WD
- Does NOT fit regular or standard cab — pinion angle causes vibration
- Requires cutting and drilling
- On factory wheels, no wider than an 11.5-inch tire
- Vertex 2.5 adjustable coilovers; shipping weight: 270.26 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Regular or standard cab models
Requires cutting and drilling. Models retaining factory wheels are advised to run no wider than a 11.5" wide tire. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Lift Kit, fitment-checked
A 6-inch lift for the 4WD Ford F-150 of 2015-2020, built around Vertex 2.5 adjustable coilovers. Cab configuration matters: regular and standard cabs are excluded on pinion angle.
Coverage is the Ford F-150 from 2015 to 2020 in 4WD, across XL, XLT, Lariat, King Ranch, Platinum, Limited and SSV trim. Two things to plan for. Fitting requires cutting and drilling, so this is not a bolt-on afternoon. And regular and standard cab trucks are excluded outright, because the resulting pinion angle causes drivetrain vibration. If you are keeping the factory wheels, Rough Country advises going no wider than an 11.5-inch tire. The kit is built around Vertex 2.5 adjustable front coilovers. Shipping weight: 270.26 lb.
What’s in the box
Kit contents
- 1× 6in RR Kit Box 557BOX1
- 1× Kit Box 557BOX2
- 1× RC Crossmember Box 1555BOX4
- 1× Knuckles 1553BOX6
- 1× Vertex 2.5 Adj FR Lh 6 In 685052l
- 1× Vertex 2.5 Adj FR Rh 6 In 685052R
- 1× V2 MONOTUBE SHOCK PAIR 760751-2
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55757 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55757 |
| UPC / GTIN | 00843030161279 |
| Lift height | 6 in |
| Shipping weight | 270.26 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here