Overview
The Rubicon Express RE7143M is a 3.5-inch Super-Flex short arm suspension lift kit with monotube shocks for the 2007–2018 Jeep Wrangler JK Unlimited 4-door. It fits the 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X trims in the 4-door body.
The short arm layout keeps the factory mounting locations. The kit adds adjustable control arms, Super-Flex spherical ball joints, replacement lift springs and longer front and rear stainless steel brake lines.
The specifications list monotube shocks at the front and the rear, a 35-inch tire size and a lift height range of 0 to 3.5 inches. The shocks are part of the kit, so the damping is matched to the lift.
Key features
- 3.5-inch Super-Flex short arm lift
- Monotube shocks at the front and rear, 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
Driveline and brake line care
Longer brake lines are a common reason to inspect the whole hydraulic system after a lift. Stainless lines resist corrosion better than rubber, but they still need to be routed clear of the springs, the axle housing and the steering components. Check for rubbing at full compression, and make sure the line has enough slack at full droop so it does not pull at the fittings.
The driveline usually needs attention too. A higher ride height changes the angle at the transfer case and the pinion, which can add vibration at highway speed. Inspect the U-joints and the slip yoke for play after the first few drives, and keep the driveshafts balanced. Regular greasing and a quick look at the bump stops on rough roads are inexpensive habits that catch wear early.
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | R/ERE7143M (RE7143M) |
| Kit type | Super-Flex short arm lift kit |
| Lift height range | 0 to 3.5 inches |
| Tire size | 35 inches |
| Front shocks | Monotube |
| Rear shocks | Monotube |
| Rear lift method | Coil springs |
| Shocks included | Yes |
| Fitment type | Direct fit |
Vehicle fitment
It is a direct fit for the 2007–2018 Jeep Wrangler (JK) Unlimited 4-door in the 70th Anniversary, 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
A short arm conversion alters the control arm angles and the pinion angle, so the alignment and the driveline should be checked once the kit is installed and the truck is at its new height.
What’s included
The kit includes monotube shocks at both ends, adjustable control arms, Super-Flex spherical ball joints, replacement lift springs, extended bump stops and longer front and rear stainless steel brake lines.
