6-Inch Lift Kit with M1 Shocks for Chevy/GMC 2500 HD 4WD (2001-2010)
- Fits 4WD Chevy Silverado 2500 HD and GMC Sierra 2500 HD (2001-2010), Silverado/Sierra 2500 (2001-2004), and 2007 Classic models
- Kit contents: 6in driver and passenger knuckles, crossmember box, torsion drop box, and two M1 monotube shock pairs
- Replacement wheels must be 17-inch or larger if the truck came with factory 17-inch wheels
- Clears up to 35x12.50 tires; that size may call for front valance trimming
- Requires minor front differential modification and a torsion bar unloading tool (SKU 1067)
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Requires minor modification to the front differential. If equipped with factory 17-inch wheels and purchasing new wheels - the new wheels must be 17-inch or larger. Use of a 35x12.50 tire may require modification to the front valance. If equipped with a gas engine then an exhaust reroute modification may be needed for front driveshaft clearance. Torsion bar unloading tool required for installation. Available here! 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 29740 is a 6-inch lift kit for 4WD Chevy Silverado 2500 HD and GMC Sierra 2500 HD trucks, built around cast one-piece knuckles and two pairs of M1 monotube shocks. Front differential modification is required, and a torsion bar unloading tool (SKU 1067) is needed to complete the job.
This 6-inch lift kit for the 2001-2010 Chevy Silverado 2500 HD and GMC Sierra 2500 HD 4WD also covers Silverado 2500 and Sierra 2500 models from 2001-2004 plus the 2007 Classic bodies listed in the fitment section. The box carries driver and passenger knuckles, the main kit box, a crossmember box, a torsion drop box, and two M1 monotube shock pairs. Plan for minor front differential work; trucks with a gas engine may need the exhaust rerouted for front driveshaft clearance. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× 6in Driver Knuckle 1297BOX1
- 1× 6in Pass Knuckle 1297BOX2
- 1× Kit Box 297BOX1
- 1× Crossmember Kit Box 297BOX2
- 1× Torsion Drop Kit Box 297BOX3
- 1× M1 MONOTUBE SHOCK PAIR 770744P
- 1× M1 MONOTUBE SHOCK PAIR 770761P
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 29740 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 29740 |
| UPC / GTIN | 00840269917257 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 203.4 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
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