6-Inch Lift Kit for Silverado 1500 and Sierra 1500 (2020–2024)
- Covers 2021–2024 Silverado 1500 High Country and 2020–2024 Sierra / Sierra 1500 4WD and RWD applications listed in fitment
- Adaptive Ride Control required — GMC Denali and Denali Ultimate, and Chevy High Country models so equipped
- Factory wheels do not clear: 20-inch or larger aftermarket wheels with 4.5in backspacing, test-fit before install
- Some aftermarket wheels may need the 0.25" wheel spacer #1065
- Cutting and drilling required — downloadable installation guide available
- Six-box kit: universal, crossmember, diesel front, Adaptive Ride Control, and both cast knuckles. Shipping weight: 216.4 lb
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 29900D is a 6-inch lift kit for listed Chevrolet Silverado 1500 and GMC Sierra 1500 applications built with Adaptive Ride Control — GMC Denali and Denali Ultimate, and Chevy High Country trims so equipped. Factory wheels will not clear; 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 2020–2024 GMC Sierra 1500 and 2021–2024 Chevrolet Silverado 1500 High Country ships as a set of boxes: a universal kit box, a high-clearance crossmember box, a diesel front kit box, an Adaptive Ride Control box, and driver- and passenger-side cast knuckle boxes. Fabricated blocks and laser-cut components keep factory track width. Confirm your truck carries Adaptive Ride Control, then test-fit wheels before installation — some aftermarket wheels call for the 0.25" spacer #1065. A downloadable installation guide and product video are available. Shipping weight: 216.4 lb.
What’s in the box
Kit contents
- 1× Universal Kit Box 217BOX1A
- 1× 6in Kit Crossmember Box 217BOX11
- 1× Diesel 6in FR Kit Box 217BOX10
- 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 29900D kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 29900D |
| UPC / GTIN | 00843030199890 |
| Lift height | 6 in |
| Shipping weight | 216.4 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here