Overview
The Rubicon Express RE4540 is a set of Extreme Duty 3-link rear upgrade components for the Jeep Wrangler JK. The 3-link system adds articulation and control for the JK platform, and it is designed as a bolt-on for Dana 44 housings.
The system includes an adjustable chromoly center link, a CNC laser cut axle truss, a differential support ring and high quality hardware. The improved geometry is intended to improve traction and reduce rear steer and bushing bind. It is made in the USA and carries the Rubicon Express Advantage lifetime warranty.
Key features
- Adjustable chromoly center link
- CNC laser cut axle truss
- Differential support ring
- High quality hardware included
- Bolt-on design for Dana 44 housings
- Compatible with Extreme Duty Long Arm systems
- Made in the USA
Setup and alignment
A 3-link rear system locates the axle with three points, and the geometry of those links decides how the axle moves, how the pinion angle changes and how the rear end steers under load. Before installing, confirm the axle housing and the long arm components it will work with, since the geometry depends on those pieces together.
Set the center link with the vehicle at ride height and the rear geometry in place, then check pinion angle and alignment. Recheck the setting after the first few drives, because bushings settle and the links can shift. Check the upper link, axle truss and brake lines for clearance through full travel, and look for rubbing after rough trail use.
- Set the center link at ride height
- Check pinion angle after installation
- Recheck the link settings after the first few drives
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE4540 |
| UPC | 614901453331 |
| Position | Rear upper |
| Center link | Adjustable chromoly |
| Axle housing | Dana 44 |
| Made in | USA |
Vehicle fitment
These components are for the Jeep Wrangler JK, in the 2007 to 2018 range.
Other Wrangler generations are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The center link is adjustable, so set it once the rear geometry is in place, then check the alignment.
The components are compatible with Rubicon Express Extreme Duty Long Arm systems, and high quality hardware is included.
What’s included
The adjustable chromoly center link, CNC laser cut axle truss, differential support ring and high quality hardware.
