4-Inch Lift Kit with N3 Shocks for 1999-2004 Jeep Grand Cherokee
- Fits 1999-2004 Jeep Grand Cherokee and 1999-2001 Cherokee Limited per the fitment table
- Does not fit V8 models, Quadra-Trac I, Quadra-Trac II, Quadra-Drive, or rzeppa joint front driveshafts
- CV style front driveshafts may produce driveline vibration; driveshaft or yoke changes can be needed to correct it
- Kit contents: coil kit, 4in N3 shock kit, and forged 0-4 inch lift track bar
- X-Flex control arm joints use a 2.5 inch body with 1.25 inch thread, are greasable, and pivot up to 35 degrees
- Install time listed at 6-8 hours; downloadable installation guide available. Shipping weight: 126.0 lb
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- V8 models
- Models with Quadra-Trac I Quadra-Trac II or Quadra-Drive
- Models equipped with a rzeppa joint front driveshaft
Models equipped with a CV style front driveshaft may result in driveshaft vibration. If this occurs replacing the driveshaft axle yoke and / or transfer case yoke will need to be performed to rid the vehicle of driveline vibration. 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 639P is a 4-inch lift kit for the 1999-2004 Jeep Grand Cherokee, built around lifted coil springs, a 4in N3 shock kit, and a forged track bar rated for 0-4 inches of lift. It does not fit V8 models, models with Quadra-Trac I, Quadra-Trac II, or Quadra-Drive, or models using a rzeppa joint front driveshaft.
This 4-inch lift kit for the 1999-2004 Jeep Grand Cherokee also covers 1999-2001 Cherokee Limited applications listed in the fitment section. The box holds a coil kit, a 4in N3 shock kit, and a forged track bar rated for 0-4 inches of lift. Front hardware adds adjustable lower control arms, sway-bar quick disconnects, bumpstop extensions, and transmission crossmember spacers; the rear side includes an upper control arm bracket, sway-bar brackets, and a shock relocation kit. Rough Country lists 6-8 hours for the job, and a downloadable installation guide is available. Confirm your drivetrain and driveshaft type against the exclusions first.
What’s in the box
Kit contents
- 1× Kit Box 1639
- 1× Coil Kit 1698C
- 1× 4in N3 Shock Kit 1698BOX4
- 1× Track Bar 10621
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 639P kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 639P |
| UPC / GTIN | 00843030129507 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 126 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here