6-Inch Lift Kit with M1 Shocks for 2015-2020 Ford F-150 4WD
- Fits listed 2015-2020 Ford F-150 4WD trims — regular and standard cab models are not supported
- M1 loaded strut pair and M1 monotube shock pair included with knuckles, crossmember, and fabricated rear blocks
- Clears 35-inch tires; works with 18-inch and larger factory wheels
- Trucks retaining factory wheels: keep tire width at 11.5 inches or less
- 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 M1 Shocks, fitment-checked
Rough Country 55740 is a 6-inch lift kit for supported 2015-2020 Ford F-150 4WD models. The kit ships with an M1 loaded strut pair and an M1 monotube shock pair, plus knuckles, a crossmember box, and fabricated rear blocks. Regular and standard cab trucks are not supported, and cutting and drilling are part of the install.
This 6-inch lift kit for the 2015-2020 Ford F-150 4WD fits XL, XLT, Lariat, King Ranch, Platinum, Limited, Police Responder, and SSV applications listed in the fitment section. Factory track width is retained, and the geometry is set up to clear 35-inch tires on 18-inch or larger factory wheels; trucks keeping the stock wheels should stay at or under an 11.5-inch tire width. Regular and standard cab models are excluded. Plan on cutting and drilling during the build, and work from the downloadable Rough Country installation guide before you start.
What’s in the box
Kit contents
- 1× Knuckles 1553BOX6
- 1× RC Crossmember Box 1555BOX4
- 1× M1 Loaded Strut Pair 502052$549.95
- 1× 6in RR Kit Box 557BOX1
- 1× Kit Box 557BOX2
- 1× M1 MONOTUBE SHOCK PAIR 770751P
Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 55740 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 55740 |
| UPC / GTIN | 00840269917967 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 238.8 lb |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Lift Kits |
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