My lifted 03 Rubicon on beadlocks with 33" tires has a Rough Country Adjustable front track bar , which has a big bend , clears well , and is known as a good value .
Recently I hit a series of bumps and death wobble started .
When you have death wobble from hitting a series of holes , that indicates loose components , I call that passive death wobble (DWWTH -death wobble waiting to happen), as there is no constant cause ,such as a low or unbalanced tire . Nothing happens normally , but the slop is there to allow it when it does take a lick, then it gets a life of it's own from inertia.
A Rough Country track bar is designed around stock track bushings, and don’t seem to last . They take a 12 mm bolt at the frame and a 10 mm at the axle if I’m correct .
I put in Energy suspension replacement urethane bushings, but they both only came in 12 mm or so diameter , so I drilled out the axle mount to 15/32 , and slapped in a grade 8 12mm flange bolt and lock nut with red loctite added and torqued it down .
Test drove it , and I could tell on the highway it was really good ...very stable at speed , point and shoot , and hit the same choppy spot on these fine Alabama backroads , and no deathwobble at all , almost had to ask myself if it was the same spot . Floated over it .
So , a 12 mm bolt and Energy Suspension bushings is something to consider if you have that track bar and plan to continue to run it .