6-Inch Lift Kit with N3 Shocks for GMC Sierra 1500 (2019–2024) — Part 26631
- Fits supported 2019–2024 GMC Sierra 1500 4WD and RWD trims, including Base, Pro, Elevation, SLE, and SLT
- Does not fit 2019 Classic (2018 body style), Denali, Denali Ultimate, AT4, or AT4X models; replacement struts do not work on diesel trucks
- Requires 20-inch or larger aftermarket wheels with 4.5in backspacing — factory wheels will not clear; some wheels need a 0.25 in spacer (SKU 1065)
- Kit contents include mono-leaf rear, crossmember, front full skid, driver and passenger knuckle boxes, and an N3 shock pair
- Cutting and drilling required; no strut disassembly or differential trimming — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- 2019 "Classic" models
- Denali or Denali Ultimate models
- AT4 models
- AT4X models
- Factory wheels
Requires cutting and drilling. Due to variances in motor weight Rough Country's replacement strut options do NOT work on diesel models. 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 SKU: 1065. Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 26631 is a 6-inch lift kit for supported 2019–2024 GMC Sierra 1500 4WD and RWD trims, built around a mono-leaf rear conversion, high-clearance crossmember, cast steering knuckles, and an N3 shock pair. Factory wheels will not work: plan on 20-inch or larger aftermarket wheels with 4.5in backspacing. Cutting and drilling are part of the install.
This 6-inch lift kit for the 2019–2024 GMC Sierra 1500 arrives as a multi-box kit covering the mono-leaf rear, a high-clearance crossmember, a full front skid, driver and passenger knuckle boxes, fabricated blocks, and a matched N3 shock pair. The install calls for cutting and drilling, though strut disassembly and differential trimming are not part of the job. Wheel planning matters here — factory wheels do not clear, 20-inch or larger aftermarket wheels with 4.5in backspacing are required, and some wheels need the 0.25 in spacer (SKU 1065). Test fit wheels first, and check the exclusion list against your trim before ordering.
What’s in the box
Kit contents
- 1× Universal Kit Box 21630991
- 1× 6in Kit Crossmember Box 217BOX11
- 1× FR Full Skid 217BOX3
- 1× 6in FR Kit Box 217BOX8
- 1× N3 Shock Pair 23158
- 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 26631 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 26631 |
| UPC / GTIN | 00840269927324 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 233 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
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