2-Inch Lowering Kit with M1 Struts for Silverado/Sierra 1500 RWD
- Fits compatible 2014–2018 Silverado 1500 and Sierra 1500 RWD, plus 2019 Silverado 1500 LD RWD
- Front drop of 2 inches; rear adjustable from 4 to 4.5 inches
- Kit contents: M1 adjustable monotube lowering struts and an M1 monotube shock pair
- Control arms must be aluminum or stamped steel; wheels 18 inches or larger required
- Rear axle flip plus minor cutting and drilling — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
ONLY fits aluminum or stamped steel arms. Requires 18-inch or larger wheels. Requires minor cutting and drilling. Requires rear axle flip. Fitment on this page is based on the manufacturer’s application data.
About this kit
2-Inch Lowering Kit with M1 Struts, fitment-checked
Rough Country 71640 is a 2-inch front lowering kit for compatible 2014–2018 Chevrolet Silverado 1500 and GMC Sierra 1500 RWD trucks, plus 2019 Silverado 1500 LD RWD. It pairs M1 adjustable monotube lowering struts with an M1 monotube shock pair, and the rear can be set between 4 and 4.5 inches of drop. Fits aluminum or stamped steel control arms only, and requires 18-inch or larger wheels.
This 2-inch lowering kit for the 2014–2018 Chevrolet Silverado 1500 and GMC Sierra 1500 RWD also covers the 2019 Silverado 1500 LD RWD applications shown in the fitment section. The front drops 2 inches on M1 adjustable monotube struts, while the rear is adjustable between 4 and 4.5 inches so you can set the stance you want. Plan on flipping the rear axle and doing minor cutting and drilling. Control arms must be aluminum or stamped steel, alignment goes back to factory specification afterward, and the whole setup can be returned to stock height later. Shipping weight: 84.78 lb.
What’s in the box
Kit contents
- 1× M1 Adjustable Lowering Struts 502189
- 1× Lowering Kit Box 71640991
- 1× M1 MONOTUBE SHOCK PAIR 770867P
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 71640 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 71640 |
| UPC / GTIN | 00840269967849 |
| Lift height | 2 in |
| Shock package | M1 series |
| Shipping weight | 84.78 lb |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here