Rough Country 639P 4 Inch Lift Kit · X-Series Jeep Grand Cherokee WJ 2WD/4WD (1999-2004)
- Front lift 4"
- Install 6-8 hours
Questions about fitment? Live chat or call 866-235-4715
Couldn't load pickup availability
- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- Does not fit v8 models.
- Does not fit models with quadra-trac i, quadra-trac ii, or quadra-drive.
- Does not fit 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.
TRU specialist notes
From the Trucks R Us fitment and install team, beyond the manufacturer's information.
- Plan for a professional wheel alignment after installing any lift or leveling kit.
- Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.
Specifications
| Brand | Rough Country |
|---|---|
| Part number | 639P |
| UPC / GTIN | 8430301295070 |
| Front Lift Height | 4" |
| Install time | 6-8 hours |
| Weight (lbs) | 129.00lbs |
| Country of Origin | USA |
| Warranty | Manufacturer’s Warranty Statement |
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | Front: Lifted coil springs Adjustable lower control arms Sway-bar quick disconnects Adjustable track bar Bumpstop extensions Transmission crossmember spacers Hardware |
| — | — | Rear: Lifted coil springs Upper control arm bracket Sway-bar brackets Bumpstop extensions Shock relocation kit Hardware |
Features
- Easy bolt-on installation increased ground clearance levels the front with the rear of the vehicle lower control arms provide proper offset to allow for wider tires.
- Kit maintains stock alignment for precise high speed handling and proper caster/pinion alignment.
- Rear shock relocation keeps shocks clear from the tires.
- X-flex control arm features: flex joints feature a massive 2.
- 5" diameter body and 1.
- 25" thread.
- Fully greasable.
- Lower joints pivot up to 35 degrees.
Fitment
| Years | Vehicle |
|---|---|
| 1999-2003 | Jeep Grand Cherokee 4WD: Laredo |
| 2004 | Jeep Grand Cherokee AWD: Laredo, Limited, Special Edition |
| 1999-2004 | Jeep Grand Cherokee RWD: Laredo, Limited |
| 2004 | Jeep Grand Cherokee RWD: Special Edition |
| 2002 | Jeep Grand Cherokee RWD: Sport |
Use the fit check above with your truck selected, or ask a specialist if your trim isn't listed.
Recommended wheels & tires
12 tire and wheel combinations from Rough Country.
| Tire | Wheel | Bolt Pattern | Offset | Note |
|---|---|---|---|---|
| 265/75R16 | Factory 16 | 5x5.0 | – | – |
| 265/70R17 | Factory 17 | 5x5.0 | – | – |
| 265/65R18 | Factory 18 | 5x5.0 | – | – |
| 31x10.50R16 | 16x8 | 5x5.0 | +30 | – |
| 265/70R17 | 17x9 | 5x5.0 | +0 | – |
| 265/65R17 | 17x9 | 5x5.0 | +0 | – |
| 265/70R17 | 17x9 | 5x5.0 | +1 | – |
| 265/65R17 | 17x9 | 5x5.0 | +1 | – |
| 265/65R18 | 18x9 | 5x5.0 | +0 | – |
| 265/65R18 | 18x9 | 5x5.0 | +1 | – |
| 32x11.50R20 | 20x9 | 5x5.0 | +0 | Trimming Required |
| 32x11.50R20 | 20x9 | 5x5.0 | +1 | Trimming Required |
Installation
- Estimated install time6-8 hours
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Despite its long-standing reputation as an off-road monster and the vast selection of mods available, the Jeep WJ has always been known to suffer in highway ride quality after lifting. Many WJ lifts focus primarily on trail performance, but fail to take in account how the control arms and track bar will perform at their new, lifted angles in day to day driving. Rough Country's new 4-inch X-Series Suspension kit answers this age-old problem, delivering outstanding off-road action while providing an incredibly smooth highway ride. Featuring newly designed durable adjustable lower control arms with durable rubber bushings, this new kit simulates the stock angle keeping your steering components under control. This 4-inch WJ Suspension Lift also features an updated track-bar bracket, re-engineered to tie into the engine mount bolts, eliminating a common weak point and offering incredible support and rigidity. In addition this kit features a full set of N3 shocks, giving you premium vibration dampening equally suitable for off-road action or daily driving.
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
Do I need an alignment after installing?
Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.
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About Rough Country
Rough Country is a leading manufacturer and distributor of off-road accessories and suspension systems. Built on a foundation of American values and rooted in Tennessee, we use our expertise of trucks, Jeeps, and UTVs to help people drive their passions... Shop all Rough Country