Overview
The Rubicon Express RE9950 is the front main assembly for the 1993 to 1998 Jeep Grand Cherokee (ZJ) long arm suspension system. It is the key component at the front of the ZJ long arm system.
The assembly provides the mounting point for the front control arms and replaces the factory transmission crossmember. It is designed for trail use without restricting the flex of the ZJ unibody. Welding is required.
Key features
- Front main assembly for the ZJ long arm system
- Mounting point for the front control arms
- Replaces the factory transmission crossmember
- Designed for trail use
- Does not restrict the flex of the ZJ unibody
- Black powder coat finish
Preparing the frame for welding
Front main assemblies are welded into the frame, so the quality of the weld and the preparation of the mounting surfaces decide how well the long arm system holds up. Before welding, clean paint, rust and mill scale from the joint, and confirm the assembly sits square and at the correct height before tacking it in place.
After welding, let the joints cool naturally and inspect every weld for cracks, undercut or porosity. Protect the bare metal with paint or a compatible coating, since heat and grinding can remove the factory finish. Recheck alignment of the control arms and the transmission support once the suspension is back together.
- Clean the joints to bare metal before welding
- Tack the assembly and check it is square
- Grind and inspect welds after cooling
- Repaint exposed metal to limit rust
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE9950 |
| UPC | 614901442281 |
| Position | Front |
| System | ZJ long arm upgrade |
| Replaces | Factory transmission crossmember |
| Finish | Black powder coat |
| Installation | Welding required |
| Fitment | Direct fit |
Vehicle fitment
It is for the Jeep Grand Cherokee (ZJ), 1993 to 1998, and is part of a long arm system. It is not intended for other generations.
Confirm your vehicle’s year, model and trim before ordering, and check that the rest of the long arm system is compatible.
Installation notes
Welding is required. Because the assembly replaces the factory transmission crossmember, plan the transmission support before removing the factory part.
