6-Inch Lift Kit for Silverado 1500 & Sierra 1500 (2019–2024)
- Fits Adaptive Ride Control models only: Sierra 1500 Denali and Denali Ultimate, Silverado 1500 High Country — check the fitment rows
- Does not clear factory wheels; requires 20-inch or larger aftermarket wheels with 4.5in backspacing, test fit before install
- Some aftermarket wheels may call for a 0.25" wheel spacer, part #1065
- Kit boxes: universal hardware, crossmember, full front skid, driver and passenger knuckles, Adaptive Ride Control components
- Cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Factory wheels
Requires cutting and drilling. ONLY fits GMC Denali or Denali Ultimate models as they are equipped with Adaptive Ride Control as a standard package. ONLY fits Chevy High Country models equipped with Adaptive Ride Control. 20-inch or larger aftermarket wheels are required. Wheels must feature 4.5in backspacing to fit. Please test fit wheels prior to installation. Some aftermarket wheels may require 0.25" wheel spacer #1065. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Lift Kit, fitment-checked
Rough Country 29900 is a 6-inch lift kit built for GM half-ton trucks equipped with Adaptive Ride Control — GMC Sierra 1500 Denali and Denali Ultimate, and Chevy Silverado 1500 High Country. Factory wheels will not clear it: plan on 20-inch or larger aftermarket wheels with 4.5in backspacing. Cutting and drilling are part of the job.
This 6-inch lift kit for the Silverado 1500 and Sierra 1500 covers 2021–2024 Silverado 1500 High Country and 2019–2024 Sierra 1500 applications, plus the 2022 Sierra 1500 Limited trims listed in the fitment section. It only works on trucks carrying Adaptive Ride Control, so confirm your trim before ordering. The kit boxes include a high-clearance crossmember, a full front skid, cast driver and passenger knuckles, and the Adaptive Ride Control hardware. Cutting and drilling are required, and a downloadable Rough Country installation guide is available to walk through the sequence before you start.
What’s in the box
Kit contents
- 1× Universal Kit Box 217BOX1A
- 1× 6in Kit Crossmember Box 217BOX11
- 1× FR Full Skid 217BOX3
- 1× 6in Adaptive Ride Control Kit Box 217BOX9
- 1× 6in Kit Dr Knuckle Box 21730BOX5
- 1× 6in Kit Ps Knuckle Box 21730BOX6
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 29900 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 29900 |
| UPC / GTIN | 00843030159566 |
| Lift height | 6 in |
| Shipping weight | 228.4 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here