4" Lift Kit - X-Series - Jeep 2WD/4WD 99-04
4 Inch Lift Kit | X-Series | Jeep Grand Cherokee WJ 2WD/4WD (1999-2004)
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.
Vehicle fitment & tire options
Vehicle fitment
- 1999-2003 Jeep Grand Cherokee (4WD)
Tire / wheel / bolt pattern / offset / notes
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 RequiredFeatures
- 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.
Product specifications
Product category: Susp Lift Kits 4wd
Manufacturer: Rough Country
Manufacturer part number: 639P
UPC: 843030129507
Country of origin: United States
Manufacturer-listed weight: 129.00 lbs
Product notes & installation
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.
Estimated installation time: 6-8 hours
Included components
Front components
- Lifted coil springs
- Adjustable lower control arms
- Sway-bar quick disconnects
- Adjustable track bar
- Bumpstop extensions
- Transmission crossmember spacers
- Hardware
Rear components
- Lifted coil springs
- Upper control arm bracket
- Sway-bar brackets
- Bumpstop extensions
- Shock relocation kit
- Hardware
Refund Policy
Returns accepted within 30 days of purchase. Items must be unused, in original packaging, and include proof of purchase. Restocking fees may apply. Non-returnable items: custom orders, electrical parts, and used products. For full details, visit our Refund Policy page.
