3.5-Inch Lift Kit with Vertex Shocks for 2025-2026 GMC Sierra 1500 — Part 28850_A
- Fits 2025-2026 GMC Sierra 1500 in 4WD and RWD — Elevation, Pro, SLE, and SLT
- Does not fit Denali, Denali Ultimate, AT4, AT4X, or diesel models
- Lifts the front 3.5 inches and the rear 2.5 inches for a leveled stance
- Kit contents: forged aluminum upper control arms, strut box, left and right adjustable Vertex 2.5 front struts, two Vertex 2.5 rear shocks
- Cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Denali or Denali Ultimate models with
- AT4 models
- AT4X models
- Diesel models
Requires cutting and drilling. Fitment on this page is based on the manufacturer’s application data.
About this kit
3.5-Inch Lift Kit with Vertex Shocks, fitment-checked
Rough Country 28850_A is a 3.5-inch lift kit for 2025-2026 GMC Sierra 1500 Elevation, Pro, SLE, and SLT models in 4WD or RWD. It pairs forged aluminum upper control arms with adjustable Vertex 2.5 front struts and Vertex 2.5 rear shocks, raising the front 3.5 inches and the rear 2.5 inches for a level stance. Installation calls for cutting and drilling.
This 3.5-inch lift kit for the 2025-2026 GMC Sierra 1500 ships as a complete corner package: forged aluminum upper control arms with pre-installed POM ball joints, a strut box, left and right adjustable Vertex 2.5 front struts, and a pair of Vertex 2.5 rear shocks. Front lift measures 3.5 inches against 2.5 inches in the rear, which levels the factory rake and opens up ground clearance. Cutting and drilling are part of the job. It does not fit Denali, Denali Ultimate, AT4, AT4X, or diesel models — confirm your trim before ordering.
What’s in the box
Kit contents
- 1× Forged Upper Control Arms 29501
- 1× 288 Strut Kit Box 28831991
- 1× Vertex 2.5 Adj FR Lh 3.5in 685066L
- 1× Vertex 2.5 Adj FR Rh 3.5in 685066R
- 2× Vertex 2.5 RR 2-3.5in 695738
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 28850_A kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 28850_A |
| UPC / GTIN | 00840269974243 |
| Lift height | 3.5 in |
| Shock package | Vertex series |
| Shipping weight | 46 lb |
| Country of origin | TH |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here