6-Inch Lift Kit for Aluminum-Arm GMC Sierra 1500 Denali 4WD
- Covers 2014–2018 GMC Sierra 1500 Denali and 2017–2018 Sierra Denali in 4WD
- 33-inch tires clear on factory 20-inch wheels
- Requires factory cast aluminum or stamped steel control arms and Magnetic Ride Control
- Cutting and drilling required; 18-inch or larger wheels, mass damper removal if fitted
- Fabricated rear blocks and a high-clearance crossmember included
The Trail Fortress check
Will it fit your truck?
✓ Fits
Requires cutting and drilling. If wider than 33x12.50 tires are used offset wheels will be required and trimming may be required. 18-inch or larger wheels are required. Please view installation instructions for complete information on proper tire/wheel combinations. If truck is equipped with a mass damper on the front differential the damper must be removed. ONLY fits models with factory cast aluminum or stamped steel control arms. ONLY fits GMC Denali models with Magnetic Ride Control. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Lift Kit, fitment-checked
Six inches of lift for the 2014–2018 GMC Sierra 1500 Denali 4WD, sized so 33-inch tires fit under factory 20-inch wheels (Rough Country 18201). Trucks need factory cast aluminum or stamped steel control arms and Magnetic Ride Control. Cutting and drilling are part of the install, and wheels must be 18 inches or larger.
Both the 2014–2018 Sierra 1500 Denali and the 2017–2018 Sierra Denali are covered, in 4WD only. An aluminum control arm knuckle, a high-clearance crossmember, and fabricated rear blocks handle the geometry, and the kit is built for trucks that keep Magnetic Ride Control. Before ordering, confirm the factory control arms are cast aluminum or stamped steel. The install requires cutting and drilling, removal of any front differential mass damper, and 18-inch or larger wheels; tires wider than 33x12.50 mean offset wheels and possible trimming. Shipping weight: 174 lb.
What’s in the box
Kit contents
- 1× 6" Kit Box 227BOX1
- 1× Crossmember Box 229BOX2
- 1× Aluminum Control Arm Knuckle 1238BOX1
- 1× 6in Kit FR Components 236BOX2
- 1× 5in Kit Box 188BOX9
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 18201 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 18201 |
| UPC / GTIN | 00843030173302 |
| Lift height | 6 in |
| Shipping weight | 174 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here