4-Inch Lift Kit with N3 Shocks for Silverado 1500 4WD (1999-2007)
- Fits 1999-2007 Chevy Silverado 1500 / GMC Sierra 1500 4WD, including 1500 HD and Classic submodels listed in the fitment table
- Does not fit 1999 old body style trucks — confirm your body style before ordering
- Frame bracket work and differential modification are part of the install; factory-painted bumpers need valance and bumper trimming
- Ships as four boxes: crossmember kit, main kit, N3 rear shock kit, and driver/passenger knuckles
- New wheels must be 17 inches or larger on trucks with factory 17-inch wheels; torsion bar removal tool 1067 recommended
The Trail Fortress check
Will it fit your truck?
✓ Fits
+ 5 more applications
✕ Does not fit
- 1999 old body style (OBS) models
Frame bracket and differential modification required. Models equipped with factory-painted bumpers will require trimming to the valance and bumper. For a visual please click here. If equipped with factory 17" wheels and purchasing new wheels the new wheels must be 17" or larger. For ease of installation a torsion bar removal tool is recommended 1067. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 25830 is a 4-inch lift kit for 1999-2007 Chevy Silverado 1500 and GMC Sierra 1500 4WD trucks, including 1500 HD and Classic applications. The kit ships as an N3 rear shock box, a main kit box, a crossmember kit box, and driver and passenger knuckles. It does not fit 1999 old body style trucks.
This 4-inch lift kit for the 1999-2007 Chevy Silverado 1500 and GMC Sierra 1500 4WD keeps the torsion bars in their factory mounting location and reuses the OEM compression travel stops, so axle angles stay close to stock. Installation calls for frame bracket work and differential modification, and trucks with factory-painted bumpers need the valance and bumper trimmed. Trucks running factory 17-inch wheels must move to 17-inch or larger if new wheels are being fitted. A torsion bar removal tool, part 1067, makes the job easier. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× NTD Crossmember Kit Box 1272BOX7
- 1× Kit Box 1258BOX8
- 1× N3 RR Kit Box 1258BOX7
- 1× Dr & Ps Knuc 1285
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 25830 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 25830 |
| UPC / GTIN | 00843030160678 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 197 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here