6-Inch Lift Kit with N3 Shocks for 2019–2024 GMC Sierra 1500 — Part 26631D
- Fits supported 2019–2024 GMC Sierra 1500 in 4WD and RWD, plus the 2022 Sierra 1500 Limited — check the full fitment table
- Does not fit 2019 Classic, Denali, Denali Ultimate, AT4, or AT4X models
- Wheel requirement: 20-inch or larger aftermarket wheels with 4.5in backspacing; factory wheels will not work
- Kit contents include a high-clearance crossmember, driver and passenger cast knuckles, mono-leaf rear package, and an N3 shock pair
- Cutting and drilling required — 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 26631D is a 6-inch lift kit for supported 2019–2024 GMC Sierra 1500 models in 4WD and RWD, built around a high-clearance crossmember, cast steering knuckles, a mono-leaf rear package, and an N3 shock pair. 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 2019–2024 GMC Sierra 1500 also covers the 2022 Sierra 1500 Limited and 2019–2023 Sierra SLE in the fitment table, across Base, Pro, Elevation, SLE, and SLT trims. Installation calls for cutting and drilling, though the front assembly goes together without strut disassembly or differential trimming. Skip it on 2019 Classic, Denali, Denali Ultimate, AT4, and AT4X trucks, and note that the replacement strut options are not intended for diesel applications. Test-fit wheels first — some aftermarket wheels need the 0.25" spacer, SKU 1065. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× Universal Kit Box 21630991
- 1× 6in Kit Crossmember Box 217BOX11
- 1× Diesel 6in FR Kit Box 217BOX10
- 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 26631D kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 26631D |
| UPC / GTIN | 00840269927409 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 221 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
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