Overview
The Rubicon Express RE7143T is a 3.5-inch Super-Flex suspension lift kit with twin-tube shocks for the 2007–2018 Jeep Wrangler JK Unlimited 4-door. It fits the 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X trims in the Unlimited body.
The kit uses a short arm Super-Flex design with a 35-inch tire size and a lift height range of 0 to 3.5 inches. The system keeps the factory mounting locations and includes adjustable control arms and Super-Flex spherical ball joints.
Shocks are included, and the kit uses twin-tube shocks at the front and rear. The longer front and rear brake lines are part of the kit.
Key features
- 3.5-inch Super-Flex suspension lift
- Twin-tube shocks, included
- Adjustable control arms with Super-Flex spherical ball joints
- Replacement lift springs and extended bump stops
- Longer front and rear stainless steel brake lines
Ball joints and control arms
Adjustable control arms and Super-Flex spherical ball joints move the axle location, so the joints take more load than stock parts. Spherical joints allow a wide range of motion, which helps articulation, but they also need clean grease and intact boots to last. Inspect the joint for free play with the wheels off the ground, and listen for clunks on turns or braking.
On a four-door Unlimited, the front and rear geometry should be measured together after the install. Longer brake lines and extended bump stops also need checking, since their clearance changes with ride height. Replacement lift springs should be checked for sag once the truck has seen its first few trail runs.
- Check joints for free play at each service
- Confirm clearance for the brake lines
- Look for sag in the replacement springs
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | R/ERE7143T (RE7143T) |
| Kit type | Super-Flex suspension lift kit |
| Lift height range | 0 to 3.5 inches |
| Tire size | 35 inches |
| Shock type | Twin-tube, per the title |
| Rear lift method | Coil springs |
| Shocks included | Yes |
| Fitment type | Direct fit |
Vehicle fitment
It fits the 2007–2018 Jeep Wrangler (JK) Unlimited 4-door 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X trims.
The 2-door JK and the JL generation are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Changing the control arms and adding Super-Flex ball joints changes the axle location, so the alignment and the driveline angles should be checked after installation.
What’s included
Twin-tube shocks, adjustable control arms, Super-Flex spherical ball joints, replacement lift springs, extended bump stops and longer brake lines are included in the kit.
