Overview
The JKRR00 is an extreme-duty radius long arm upgrade kit with a 4-link front and 3-link rear layout. It is a direct fit kit. Confirm fit for your vehicle’s year, model and trim before ordering.
The kit is designed for extreme-duty use with radius long arms.
Key features
- Extreme-duty radius long arm design, per the title
- Four-link front layout
- Three-link rear layout
Radius arm kit basics
Radius arms locate the axle fore and aft and carry braking and acceleration forces, so a longer or stiffer arm changes how the suspension behaves under load. A four-link front and three-link rear layout uses separate links to control axle position, which affects wheel travel and driveline angles.
After a kit goes in, check the alignment, the driveline angles and the bushings for wear. Long arm kits often change caster and pinion angle, so regular inspection helps catch loose fasteners early.
- Re-torque fasteners after the first drives
- Check driveline angles after installation
- Inspect bushings for wear or cracking
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | JKRR00 |
| UPC | 70000707131 |
| Front arm layout | 4 link |
| Rear arm layout | 3 link |
| Fitment type | Direct fit |
Vehicle fitment
Confirm fit for your vehicle’s year, model and trim before installing the kit.
Installation notes
Long arm kits change suspension geometry, so check alignment and driveline angles after installation.
What’s included
The kit is a radius long arm upgrade. Check the package contents against your installation before starting.
