6-Inch Lift Kit with M1 Shocks for Silverado & Sierra 4WD
- Fits 4WD Silverado 1500/1500 HD and Sierra 1500 HD (2001-2006) plus 2500-series applications — check the fitment table for your year and submodel
- Kit contents include M1 Monotube shock pairs, 6in CNC-machined knuckles, crossmember kit, and torsion drop kit
- Rated to run 35x12.50 tires; integrated skid plate shields front components
- Minor front differential modification required; torsion bar unloading tool (SKU 1067) needed for the install
- Two-piece driveshaft trucks require a separate carrier-bearing drop kit (SKU 1115)
- Downloadable installation guide available. Shipping weight: 202.4 lb
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Applicable on 2007 "Classic" models. Requires minor modification to the front differential. Models with 2-piece driveshafts require a carrier-bearing drop kit. SKU: 1115. Torsion bar unloading tool required for installation. SKU: 1067. 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 25940 is a 6-inch lift kit for 4WD Chevy Silverado 1500/1500 HD and GMC Sierra 1500 HD (2001-2006), plus Silverado 2500/2500 HD and Sierra 2500/2500 HD applications. It ships with two M1 Monotube shock pairs, CNC-machined 6in knuckles, a crossmember kit, and a torsion drop kit. It also covers 2007 "Classic" bodies.
This 6-inch lift kit for 4WD Chevy Silverado and GMC Sierra trucks clears the fitment years listed above and also applies to 2007 "Classic" bodies. The box holds a crossmember kit, a torsion drop kit, driver and passenger 6in knuckles, and two M1 Monotube shock pairs, with an integrated skid plate over the front components. Plan for minor front differential modification during the build, and note that a torsion bar unloading tool (SKU 1067) is needed to complete the job. Trucks with a two-piece driveshaft also need a carrier-bearing drop kit (SKU 1115), ordered separately.
What’s in the box
Kit contents
- 1× Kit Box 297BOX1
- 1× Crossmember Kit Box 297BOX2
- 1× Torsion Drop Kit Box 259BOX3
- 1× 6in Driver Knuckle 1297BOX1
- 1× 6in Pass Knuckle 1297BOX2
- 1× M1 MONOTUBE SHOCK PAIR 770761P
- 1× M1 MONOTUBE SHOCK PAIR 770744P
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 25940 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 25940 |
| UPC / GTIN | 00840269969249 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 202.4 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
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