M1 Monotube 6-Inch Lift Kit for 2019–2024 Silverado 1500 4WD
- M1 loaded strut pair for 6 inches of front lift, paired with an M1 monotube shock pair
- Fits 2019–2024 Chevy Silverado 1500 4WD and the 2022 Silverado 1500 LTD
- Trail Boss, ZR2, Adaptive Ride Control, and 2019 Classic body-style trucks are excluded
- Requires 20-inch or larger aftermarket wheels with 4.5in backspacing
- Cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- 2019 "Classic" models
- Models with Adaptive Ride Control
- LT Trail Boss or Custom Trail Boss models
- ZR2 models
- Factory wheels
Requires cutting and drilling. 20-inch or larger aftermarket wheels are required. Wheels must feature 4.5in backspacing to fit. Please test fit wheels prior to installation. Some aftermarket wheels may require 0.25" wheel spacer #1065. Fitment on this page is based on the manufacturer’s application data.
About this kit
M1 Monotube 6-Inch Lift Kit, fitment-checked
Rough Country 21740 puts M1 damping on both ends of a 6-inch Silverado 1500 lift — an M1 loaded strut pair sized for 6 inches of front lift, plus an M1 monotube shock pair. Fitment spans 2019–2024 Chevy Silverado 1500 4WD and the 2022 Silverado 1500 LTD. Aftermarket wheels of 20 inches or larger with 4.5in backspacing are required.
Choosing the M1 version of this 6-inch lift kit for the 2019–2024 Chevy Silverado 1500 4WD means the strut and shock package is decided for you: M1 loaded struts up front, M1 monotube shocks at the rear, both matched to the 6-inch height. The lift hardware matches the rest of the platform — driver and passenger cast knuckle boxes, a high-clearance crossmember, a front full skid plate, and a universal kit box. Cutting and drilling are part of the job, and a downloadable installation guide is available. Shipping weight: 278 lb.
What’s in the box
Kit contents
- 1× 6in Kit Dr Knuckle Box 21730BOX5
- 1× 6in Kit Ps Knuckle Box 21730BOX6
- 1× 6in Kit Crossmember Box 217BOX11
- 1× Universal Kit Box 217BOX1A
- 1× FR Full Skid 217BOX3
- 1× M1 Loaded Strut Pair 502067$549.95
- 1× M1 MONOTUBE SHOCK PAIR 770739P
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 21740 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 21740 |
| UPC / GTIN | 00840269917028 |
| Lift height | 6 in |
| Shock package | M1 series |
| Shipping weight | 278 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
Why buy here
The fitment-first store
Keep looking
More Lift Kits
4 Inch
4 Inch
6 Inch
6 Inch
6 Inch
6 Inch
7 Inch
7 Inch
7 Inch
7 Inch
7 Inch
7 Inch
7.5 Inch
4 Inch
4 Inch
6 Inch
6 Inch