Overview
The Rubicon Express RE6300 is a 5.5-inch Extreme-Duty long arm lift kit for the 1984–2001 Jeep Cherokee XJ. It is a direct fit for the Base, Briarwood, Chief, Classic, Country, Laredo, Limited, Pioneer, SE and Sport trims.
The kit replaces the factory suspension with longer control arms, which improves suspension geometry on a lifted XJ. Longer arms are designed to add stability on and off road, reduce torque roll, axle steer and suspension jacking, and improve traction compared with short arm lift kits.
The kit includes a three-piece crossmember for transfer case and transmission access, front Extreme-Duty radius long arms with serviceable Super-Flex spherical ball joints, a heavy-duty track bar, a heavy-duty track bar bracket brace and Gen II disconnects. The specifications list a 33-inch tire size and a lift height range of 4 to 5.5 inches.
Key features
- Three-piece crossmember for easier transfer case and transmission access
- Front Extreme-Duty radius long arms
- Serviceable Super-Flex spherical ball joints
- Heavy-duty track bar and track bar bracket brace
- Gen II disconnects
Long arm geometry basics
Long control arms change the angles at which the axle moves through its travel. On a lifted XJ, this helps the axle stay in a steadier position, and the arms are meant to reduce torque roll and axle steer under acceleration. The three-piece crossmember is a separate part that supports the drivetrain and can be removed for service access.
Because a long arm kit replaces the factory suspension, the track bar, driveline angles and transfer case position all need checking during the install. Super-Flex ball joints are serviceable, so they can be greased and inspected instead of replaced at the first sign of play. Check the boots for tears regularly, since dirt speeds joint wear.
- Grease serviceable ball joints on a regular schedule
- Check track bar bracket bolts after the first trail runs
- Inspect radius arm bushings for cracks
- Confirm driveline angles before final alignment
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | R/ERE6300 (RE6300) |
| Kit type | Extreme-Duty long arm suspension lift kit |
| Lift | 5.5 inch |
| Lift height range | 4 to 5.5 inches |
| Tire size | 33 inches |
| Rear lift method | Leaf springs |
| Shock status | Title says no shocks; specifications say shocks included |
| Fitment type | Direct fit |
Vehicle fitment
It fits the 1984–2001 Jeep Cherokee (XJ) Base, Briarwood, Chief, Classic, Country, Laredo, Limited, Pioneer, SE and Sport trims. Confirm your vehicle’s year, model and trim before ordering.
Other Cherokee and Wagoneer models, and the XJ years outside 1984–2001, are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
A long arm kit replaces the factory suspension, so the crossmember, the track bar and the driveline angles all need to be checked and set during the install. The alignment should be set once the kit is complete.
What’s included
The described kit includes the three-piece crossmember, front Extreme-Duty radius long arms with Super-Flex spherical ball joints, the heavy-duty track bar, the track bar bracket brace and Gen II disconnects. The title says no shocks, while the specifications say shocks are included, so check the box.
