The coil spring equipped Wranglers all utilized a track bar on the front and rear axle to keep the axle located in relation to side to side. It’s simple really, one side of the bar is attached to the frame, the other side to the axle. The bar is connected at opposite sides.
Since the bar is attached to only one side an arcing movement is encountered when the axle is moving up and/or down. In the perfect world the bar would be as level to the axle as possible minimizing the arc experienced during movement. Since we lift our Jeeps we increase the angle therefore increasing the arc.
The increase can cause the feeling of sideways movement especially during higher speeds. The increased arc causes a wider amount of movement that translates into a shoving feeling to the driver. This problem seemed to become more commonly experienced by JK owners and now JL owners over the TJ. All share a similar suspension design.
The solution? Reduce the angle.
Reducing the angle on the front track bar is more difficult over the rear. There are issues that occur in the front when changing the angle of the track bar without changing the pitman arm angle. Changing the rear is rather easy and kits usually do it one of two ways, lower the bar from the frame or raise it from the axle.
Teraflex Rear Track Bar Bracket
The Teraflex rear track bar bracket attaches to the axle side mount and raises the mounting point of the track bar to reduce the angle and therefore reduce the shoving feeling when hitting bumps. The reduction of the angle will help center the axle after a lift.
This bracket can be intstalled in about an hour and only really requires removing the rear drivers side tire. Jack up the Jeep, secure with a jack stand and remove the rear wheel.
Remove the axle side track bar bolt and pull the bar from the mount. Loop it over the top of the mount and allow it to rest.
Two holes will need to be drilled to reinforce the bracket, install the bracket and insert the supplied bolt into the factory mount hole. Tighten the bolt enough to keep the bracket in place to mark the holes for the side bolts.
With the side bolt holes drilled install the bracket using the supplied bolts and sleeve. Now the track bar can be installed into the new upper bracket hole. Depending on the size of the lift will determine which upper bracket hole to use.
With everything tight reinstall the tire and lower the Jeep. Inspect the installation after some driving and check the tightness of all the fasteners.