6-Inch Lift Kit with N3 Shocks for 2015–2020 Ford F-150 4WD
- Fits compatible 2015–2020 Ford F-150 4WD models — regular and standard cab trucks are excluded
- Kit contents: loaded 6-inch strut pair, N3 shock pair, RC crossmember, knuckles, and rear kit boxes
- Room for 35-inch tires; works with factory wheels 18 inches and larger
- Factory wheels limit tire width to 11.5 inches or narrower
- Cutting and drilling required — downloadable installation guide available
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 with N3 Shocks, fitment-checked
Rough Country 55731 is a 6-inch lift kit for compatible 2015–2020 Ford F-150 4WD models, built around a loaded 6-inch strut pair and an N3 rear shock pair. Cutting and drilling are part of the install. It does not fit regular or standard cab trucks. Trucks keeping the factory wheels should stay at or under an 11.5-inch tire width.
This 6-inch lift kit for the 2015–2020 Ford F-150 4WD covers XL, XLT, Lariat, King Ranch, Platinum, Limited, Police Responder, and SSV applications listed in the fitment section. The box ships with a loaded strut pair, an N3 shock pair, a fabricated crossmember, knuckles, and rear kit hardware, so front ride height comes up to match the rear without widening factory track. Clearance is there for 35-inch tires, and factory wheels 18 inches and up work as-is. Confirm your cab configuration and tire width first, then pull the downloadable Rough Country installation guide before you start.
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× Loaded Strut Pair 501052
- 1× N3 Shock Pair 23165
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55731 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55731 |
| UPC / GTIN | 00843030161248 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 248.8 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here