6-Inch Lift Kit with M1 Shocks for 2004–2008 Ford F-150 4WD
- Fits compatible 2004–2008 Ford F-150 4WD and AWD models, XL through Limited — check the fitment list
- Does not fit Heavy Duty Payload Package (seven-lug) trucks or 2004 Heritage models
- Includes an M1 loaded strut pair sized for 6 inches plus an M1 monotube shock pair
- Fabricated rear lift blocks address axle wrap; differential skid plate included
- Minor cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Models equipped with Heavy Duty Payload Package (seven lug models)
- 2004 Heritage models
Requires minor cutting and drilling. For a visual please click here. 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 54640 is a 6-inch lift kit for compatible 2004–2008 Ford F-150 4WD and AWD models, built around an M1 loaded strut pair and an M1 monotube shock pair. Minor cutting and drilling is part of the job. It does not fit trucks with the Heavy Duty Payload Package (seven-lug) or 2004 Heritage models.
This 6-inch lift kit for the 2004–2008 Ford F-150 4WD ships as a boxed assembly: driver and passenger knuckles, a crossmember box, a rear block and U-bolt box with fabricated anti-axle-wrap blocks, the main kit box, an M1 loaded strut pair matched to the 6-inch height, and an M1 monotube shock pair. Track width and factory steering geometry stay as designed, and a differential skid plate covers the front housing. Confirm your truck is not a seven-lug Heavy Duty Payload or 2004 Heritage build, then work from the downloadable Rough Country installation guide.
What’s in the box
Kit contents
- 1× Dr Knuckle 1576 BOX 3
- 1× Pass Knuck 1576 BOX 4
- 1× 6in Rear Block and U-Bolt Box 1576991
- 1× Crossmember Box 1576BOX17
- 1× Kit Box 1576BOX16
- 1× M1 Loaded Strut Pair 502003
- 1× M1 MONOTUBE SHOCK PAIR 770751P
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 54640 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 54640 |
| UPC / GTIN | 00840269967894 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 259.45 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here