3.5-Inch Lift Kit with M1 Struts for 2025–2026 GMC Sierra 1500
- Fits 2025–2026 GMC Sierra 1500 4WD and RWD in Elevation, Pro, SLE, and SLT trim
- Does not fit Denali, Denali Ultimate, AT4, AT4X, diesel, or 2019 "Classic" body-style models
- Kit contents: M1 loaded strut pair, M1 monotube shock pair, and red forged upper control arms
- 3.5 inches of front lift paired with 2.5 inches at the rear for a level stance
- POM ball joints come pre-installed in the forged aluminum arms
- Downloadable installation guide available — shipping weight: 92.0 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- 2019 "Classic" models (2018 body style) Does NOT fit Denali or Denali Ultimate models
- AT4 models
- AT4X models
Due to variances in motor weight Rough Country's replacement strut options do NOT work on diesel models. Fitment on this page is based on the manufacturer’s application data.
About this kit
3.5-Inch Lift Kit with M1 Struts, fitment-checked
Rough Country 28840RED_A is a 3.5-inch lift kit for the 2025–2026 GMC Sierra 1500 in 4WD or RWD, built around an M1 loaded strut pair, an M1 monotube shock pair, and red forged aluminum upper control arms with pre-installed POM ball joints. Diesel models, Denali, Denali Ultimate, AT4, AT4X, and 2019 "Classic" body-style trucks are not covered.
This 3.5-inch lift kit for the 2025–2026 GMC Sierra 1500 raises the front 3.5 inches and the rear 2.5 inches, so the truck sits level front to back instead of nose-down. Fitment covers Elevation, Pro, SLE, and SLT submodels in 4WD and RWD; Denali, Denali Ultimate, AT4, AT4X, diesel, and 2019 "Classic" trucks fall outside it. The forged aluminum upper control arms arrive with ball joints already pressed in, which keeps the front-end work moving. A downloadable Rough Country installation guide is available — read through it before you start. Shipping weight: 92.0 lb.
What’s in the box
Kit contents
- 1× 288 Strut Kit Box 28831991
- 1× Red Forged Upper Control Arms 29501RED
- 1× M1 Loaded Strut Pair 502066
- 1× M1 MONOTUBE SHOCK PAIR 770739P
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 28840RED_A kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 28840RED_A |
| UPC / GTIN | 00840269974212 |
| Lift height | 3.5 in |
| Shock package | M1 series |
| Shipping weight | 92 lb |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here