5-Inch M1 Monotube Lift Kit for 2020-2026 Chevy/GMC 2500 HD
- Fits 2020-2026 Silverado and Sierra 2500 HD/3500 HD across WT, LT, LTZ, High Country, SLE, SLT, and Denali trims
- Two M1 Monotube shock pairs matched to 5 inches of lift
- Retains stock track width and factory axle position; no differential drilling
- Not for dually, rear overload spring, AT4X, or ZR2 trucks; aftermarket wheels required
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Dually models
- Equipped with rear overload springs
- AT4X models
- ZR2 models
Does NOT work with factory wheels. Gas models may require modification to the exhaust for driveshaft clearance. Fitment on this page is based on the manufacturer’s application data.
About this kit
5-Inch M1 Monotube Lift Kit, fitment-checked
Rough Country 10240 delivers a 5 inch lift for 2020-2026 Silverado 2500 HD/3500 HD and Sierra 2500 HD/3500 HD using two M1 Monotube shock pairs. Dually trucks, trucks equipped with rear overload springs, AT4X, and ZR2 models fall outside fitment, and factory wheels will not clear the kit.
Two M1 Monotube shock pairs and a 5 inch non-torsion-drop bracket set are the core of this build. The crossmember is laser-cut for a factory-style fit, cast driver and passenger knuckles carry the front, and nothing about the drivetrain or differential has to be modified. Track width and axle angles are unchanged from stock. Fitment is broad across Silverado and Sierra HD trims from WT to Denali Ultimate as listed in the fitment section, but the exclusions are firm: no dually, no rear overload springs, no AT4X, no ZR2, and no factory wheels. Shipping weight: 292.0 lb.
What’s in the box
Kit contents
- 1× Crossmember Box 10130BOX3
- 1× Kit Box 10230BOX1
- 1× 5" NTD Bracket Box 10230997
- 1× 253x Kit Box 1253BOX6
- 1× M1 MONOTUBE SHOCK PAIR 770744P
- 1× M1 MONOTUBE SHOCK PAIR 770776P
- 1× Dr Knuckle 10130BOX1
- 1× Pass Knuckle 10130BOX2
- 1× 5in Kit Rear Box 10230998
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 10240 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 10240 |
| UPC / GTIN | 00840269916984 |
| Lift height | 5 in |
| Shock package | M1 series |
| Shipping weight | 292 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here