Overview
The Rubicon Express RE7145FPR is a 3.5 inch sport lift kit for 4-door Jeep Wrangler JK models, supplied with Fox Performance Resi shocks.
The kit adds a new high steer kit and control arm geometry correction brackets to the sport setup. Rear cam bolts allow pinion adjustment, and extended sway bar end links and bump stops are included.
Warranty coverage for the Fox Performance Resi shocks falls under FOX, not the Rubicon Express Advantage Warranty. The kit is made in the USA.
Key features
- Fox Performance Resi shocks included
- New high steer kit
- Control arm geometry correction brackets
- Rear cam bolts for pinion adjustment
- Bump stops and rear track bar bracket
- Extended sway bar end links
- 3.5 inch front and rear replacement coil springs
- Upgrade path to the Super-Flex system
Pinion angle after lifting
Four-door Wranglers have a longer driveline than two-door models, so check the joint angles carefully. Rear cam bolts set pinion angle, and the geometry correction brackets help keep the control arms in a suitable position. Check the joints first if the truck vibrates under load.
Measure pinion angle with a digital angle finder on a flat surface, and make small adjustments with the cam bolts. Recheck after the first few drives, since new bushings and springs can settle. Vibration at highway speed often points to a driveline angle that needs attention.
Keep an eye on the high steer components too. Look for play in the drag link, worn tie rod ends and boots that have torn. Replace any worn steering part before it affects tracking, and keep the steering stabilizer clear of nearby parts through full suspension travel.
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE7145FPR |
| Body style | 4-door models |
| Lift height range | 2.5 to 3.5 inches, sold as a 3.5 inch kit |
| Shocks | Fox Performance Resi, included |
| Springs | 3.5 inch front and rear replacement coil springs |
| Steering | New high steer kit |
| Control arms | Geometry correction brackets |
| Pinion adjustment | Rear cam bolts |
| Made in | USA |
| Warranty | FOX warranty on the shocks |
Vehicle fitment
It fits the 2007–2018 Jeep Wrangler (JK) and is built for 4-door bodies, in line with the most popular Jeep JK suspension systems.
This fitment does not extend to the JL Wrangler, the Gladiator, or the older TJ and LJ. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Newer trucks from 2012 onward can require an exhaust modification or a front drive shaft. Have the alignment and pinion angle checked after installation.
What’s included
A new high steer kit, control arm geometry correction brackets, rear cam bolts, bump stops, a rear track bar bracket, extended sway bar end links, 3.5 inch replacement coil springs and Fox Performance Resi shocks.
