When adding larger tires to your JL Wrangler you can often experience death wobble at certain speeds. Unfortunately the Jeep didn’t seem to solve the death wobbly with the JL. Interestingly it seems to happen to some and not others. A small 2″ lifted JL Sport or Sahara can easily run 35’s and a Rubicon can run 37’s. These large (now “starter size”) tires can mess with your Jeep’s handling and create death wobble.
The jeepfan.com 2018 JL Rubicon is running 37’s but has never experienced death wobble. The 2″ Mopar lift includes longer lower control arms to compensate for the added height and correct caster. This does have a positive effect on preventing the wobble. But, the larger size of the tires seems to make steering feel a bit more mushy.
Teraflex makes two versions of Falcon steering stabilizers for the JL, one is a fixed tuning the other is adjustable for varied driving conditions. We chose the fixed one (Falcon 2.1 Nexus) for our JL.
Installation
Installing the stabilizer is rather simple and can be done in under an hour. The first step is remove the factory stabilizer by removing the bolt at the tie rod end and the 3 bolts that hold the bracket to the axle.
factory stabilizer 
tie rod end 
axle bracket bolts 
side axle bracket bolt 
stabilizer removed
With the stock stabilizer removed remove the stock bracket from the tie rod end. Install the new Teraflex bracket on the axle side. Then install the new Teraflex brackets on the tie rod side. It’s probably necessary to steer the wheels to the right to get all the bolts in.
axle side mount 
tie rod side 
steering for bolt clearance
With all that all that remains in installing the stabilizer to the brackets and tightening down everything.
installing the tie rod end 
tightening down 
completed install
With everything tightened take the Jeep for a short ride testing the steering to make sure everything moves smooth and completely. Double check the fasteners and enjoy the firm feel of the steering. After installation the Jeep’s steering feels much more firm and in control over the bumps.
Falcon Nexus EF 2.1 Steering Stabilizer at Quadratec
jeepfan.com 2018 JL Wrangler Unlimited Rubicon
