6-Inch Diesel Lift Kit for 2025–2026 Chevy Silverado 1500 4WD
- Fits 2025–2026 Chevy Silverado 1500 4WD — Custom, High Country, LT, LTZ, RST, and WT
- Not for LT Trail Boss, Custom Trail Boss, or ZR2 models
- Diesel front kit, high-clearance crossmember, cast knuckles, and fabricated rear blocks in the box
- Requires 20-inch or larger aftermarket wheels with 4.5 in backspacing; some need the 0.25 in spacer, part 1065
- Cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- LT Trail Boss or Custom Trail Boss models
- ZR2 models
- Factory wheels
Requires cutting and drilling. 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 Diesel Lift Kit, fitment-checked
Rough Country 110030D is a 6-inch lift kit for 2025–2026 Chevy Silverado 1500 4WD trucks, using the diesel-specific front kit along with a high-clearance crossmember, cast driver and passenger knuckles, and fabricated rear blocks. LT Trail Boss, Custom Trail Boss, and ZR2 models are excluded, factory wheels will not clear, and cutting and drilling are part of the install.
This 6-inch lift kit fits 2025–2026 Silverado 1500 4WD trucks, and its front hardware is the diesel-specific version listed in the kit contents. Also in the boxes: a high-clearance crossmember, cast driver and passenger knuckles, and fabricated rear blocks, all set up to hold factory track width. Cutting and drilling are part of the job. Factory wheels will not clear, so aftermarket wheels 20 inches or larger with 4.5 in backspacing are required, and some need the 0.25 in wheel spacer, part 1065. Test fit wheels first, then work from the downloadable installation guide.
What’s in the box
Kit contents
- 1× Universal Kit Box 110030991
- 1× 6in Kit Crossmember Box 217BOX11
- 1× Diesel 6in FR Kit Box 217BOX10
- 1× 6in FR Kit Box 21700991
- 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 110030D kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 110030D |
| UPC / GTIN | 00840269966538 |
| Lift height | 6 in |
| Shipping weight | 223 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here