6.5-Inch Fender Flares for 2020–2026 GMC Sierra HD
- Fits 2020–2026 GMC Sierra 2500 HD and 3500 HD, 4WD and RWD
- Installs over the factory fender flares — 6.5-inch height, 1 inch of added coverage
- Not for dually models, AT4X, or trucks with the AEV package
- Paint-ready tri-blend ABS with a UV-resistant finish; removable
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Dually models
- AT4X or models equipped with the AEV package
These flares install over the factory fender flares. California Residents: Prop65 Warning. Fitment on this page is based on the manufacturer’s application data.
About this part
6.5-Inch Fender Flares, fitment-checked
These 6.5-inch flares go on over the factory flares on a 2020–2026 GMC Sierra 2500 HD or 3500 HD, adding 1 inch of coverage without removing what is already on the truck. Single-rear-wheel trucks only — dually beds are not covered — and AT4X or AEV-package trucks fall outside fitment.
This is the heavy-duty set: 2020–2026 GMC Sierra 2500 HD and 3500 HD, 4WD and RWD, Pro and SLE through Denali Ultimate. It differs from the light-duty flares in one important way — the pieces mount over the factory flares rather than replacing them, and the 6.5-inch height adds 1 inch of coverage on top of what the truck already has. Dually trucks are not covered, and neither are AT4X or AEV-package builds. The ABS shells are UV-stable and paint-ready. Shipping weight: 19.72 lb.
Specifications
Specs
| Brand | Rough Country |
| Part number | S-G11912 |
| UPC / GTIN | 00840269971020 |
| Lift height | 6.5 in |
| Shipping weight | 19.72 lb |
| Warranty | 3 Year Limited Warranty |
| Country of origin | US |
| Category | Exterior Accessories › Fender Flares |
| Installation guide | Downloadable PDF |
Why buy here