Overview
The Rubicon Express RE2120 is a 1-inch transfer case lowering kit for the Jeep Cherokee XJ and Grand Cherokee ZJ. The drop goes through the transmission crossmember and reduces driveline angle and vibration on vehicles without a CV driveshaft.
The short description lists 3/4-inch bolts with the kit.
Key features
- 1-inch drop, per the short description
- 3/4-inch bolts, per the short description
- Reduces driveline angle and vibration on vehicles not using a CV driveshaft
Transmission crossmember and drop
The transmission crossmember carries the transmission and transfer case mounts, and a drop changes where the transfer case sits relative to the body. That shift affects the driveshaft angles, the shifter linkage and the clearance to the floor or skid plates. Before buying a drop, consider how the crossmember and mounts on your Cherokee are holding up.
Older XJ and ZJ mounts can crack or sag, which may make a drop less stable. Inspect the crossmember for rust and the bolts for stretched threads, and replace worn rubber mounts while the transfer case is supported. Once the drop is in, re-check shifter movement and listen for driveline noise on the first short drives.
- Inspect the crossmember for rust before installing
- Check shifter linkage after the drop
- Recheck driveline noise on early drives
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE2120 |
| UPC | 614901440089 |
| Drop | 1 inch |
| Bolt size | 3/4 inch |
| Fitment type | Direct fit |
Vehicle fitment
Based on the product title and description, this kit is for the Jeep Cherokee (XJ) from 1984 to 2001 and the Grand Cherokee (ZJ) from 1993 to 1998.
The Grand Cherokee WJ and later models are not covered by the ZJ years named here.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
After the drop is in, measure the driveline angles to confirm they sit where you expect them to.
What’s included
The kit includes 3/4-inch bolts. Sort the parts on arrival and check them against your installation plan first.







