4-Inch Lift Kit with N3 Shocks for Silverado 1500 / Sierra 4WD
- Fits Trail Boss and AT4 4WD models only — review the full fitment list and exclusions
- Excludes diesel engine models, 2019 "Classic" (2018 body style) trucks, and Denali with Magnetic Ride Control
- Factory wheels do not clear: aftermarket wheels 20-inch or larger with 4.5in backspacing are required — test fit first
- N3 series shocks, cast knuckles, high-clearance crossmember, and fabricated rear blocks
- Cutting and drilling required; no strut disassembly — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
+ 1 more applications
✕ Does not fit
- GMC Denali models with Magnetic Ride Control
- 2019 "Classic" models (2018 body style) ONLY fits Trailboss and AT4 models Requires cutting and drilling
- Factory wheels 20-inch or larger aftermarket wheels are required
- Diesel engine models
About this kit
4-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 27531D is a 4-inch lift kit with N3 series shocks for Trail Boss and AT4 versions of the Chevrolet Silverado 1500 and GMC Sierra 4WD. It ships as a multi-box kit with a high-clearance crossmember, cast steering knuckles, and fabricated rear blocks. Factory wheels will not clear; diesel models and GMC Denali with Magnetic Ride Control are not covered.
This 4-inch lift kit for the 2020-2024 Chevrolet Silverado 1500 and GMC Sierra 4WD is built around Trail Boss and AT4 applications, with fitment also listed for Silverado 1500 LTD and Sierra 1500 Limited. It lifts front and rear together, keeps stock track width, and uses a high-clearance crossmember to hold suspension geometry in range. No strut disassembly is needed, but cutting and drilling are part of the job. Diesel engine models, 2019 Classic (2018 body style) trucks, and Denali models with Magnetic Ride Control are excluded. Check the fitment list and wheel requirements before ordering.
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 FR Kit Box 21731994
- 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 27531D kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 27531D |
| UPC / GTIN | 00843030196080 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 223 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here