Overview
The Rubicon Express RE8003M is a 3.5-inch Super-Flex short arm suspension lift kit with monotube shocks for the 1993–1998 Jeep Grand Cherokee ZJ. It is a direct fit for the Base, Laredo, Limited, Orvis, SE, TSi and 5.9 Limited trims.
The Super-Flex system keeps the factory short arm suspension geometry and uses the factory suspension mounting points. It replaces the stock suspension with an adjustable front track bar, adjustable rear control arms and Super-Flex spherical ball joints.
The kit includes replacement lift springs and Gen II sway bar disconnects. The specifications list a 31-inch tire size in the table, and the title names monotube shocks. The lift height range is 0 to 3.5 inches.
Key features
- 3.5-inch Super-Flex short arm lift for the ZJ Grand Cherokee
- Adjustable front track bar and adjustable rear upper and lower control arms
- Super-Flex spherical ball joints
- Gen II sway bar disconnects
- Uses the factory suspension mounting points
Super-Flex geometry basics
Super-Flex short arm systems replace the stock control arms with adjustable parts that set axle location and caster. Because the arms change the suspension geometry, the track bar, tie rod and pinion angle all need to be set together. Small errors can make the steering wander, cause uneven tire wear or shorten driveline life, so setup should be done with a full alignment rather than a basic check.
Spherical ball joints are built for articulation and need regular inspection, since dirt and grit can get into the joint. Look for play in the ball joint, torn boots and grease that has been pushed out. Adjustable control arms should also be checked for loose jam nuts after the first trail runs, and any sign of binding should be fixed before the truck is driven hard.
- Inspect ball joint boots at each service
- Recheck pinion angle after setup
- Tighten jam nuts after the first trail runs
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | R/ERE8003M (RE8003M) |
| Kit type | Super-Flex short arm lift kit |
| Lift height range | 0 to 3.5 inches |
| Tire size | 31 inches |
| Shock type | Monotube, per the title |
| Rear lift method | Coil springs |
| Shocks included | Yes |
| Fitment type | Direct fit |
Vehicle fitment
It fits the 1993–1998 Jeep Grand Cherokee (ZJ) in the 5.9 Limited, Base, Laredo, Limited, Orvis, SE and TSi trims.
The WJ and later Grand Cherokee generations and other Jeep models are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Because this is a complete suspension replacement that changes the control arm geometry, the alignment, the track bar setting and the pinion angle should all be set after installation.
What’s included
The described kit includes the Super-Flex adjustable front track bar, adjustable rear upper and lower control arms, Super-Flex spherical ball joints, replacement lift springs and Gen II sway bar disconnects. Monotube shocks are named in the title.
