Due to the problem we were having with Death Wobble on the WJ with more than 3" of lift, we did some experimentation with stiffer aftermarket track bar bushings, and were able to cure the Death Wobble we were having on our test rig after installing them. Knowing this, Kevin found a polyurethane molding company who was willing to build a mold and pour us the hardest track bar bushings that exist...at least 25% stiffer than the STIFFEST ones that we had the early success with...which will work in the ZJ, XJ, WJ, TJ/LJ, and JK track bars built by JKS, as well as our Track Bar Conversion for the ZJ/XJ. Additionally, they will work in any aftermarket or Jeep/Mopar factory track bar, so long as that bar has the "standard Jeep end-loop", which measures 1-1/2" Inside Diameter and has a width of 1-3/16". Measure your bar to see if it will work...it fits many different aftermarket bars. MAKE SURE TO PURCHASE THE KOR-1189-S KIT WITH SLEEVES INSTEAD, IF YOU ARE RETROFITTING A NON-JKS BAR. The result has been superior. We have been able to cure our customer's Death Wobble in most all cases with our SuperDurometer bushings, a new Hard-KOR steering stabilizer, and a proper alignment.
If you could cure your Death Wobble problems for under $100, would you feel that was good investment? Many, MANY customers think so, and write to us to tell us so, and to thank us for creating such a product.
Make sure to order up the KOR-1109 Mineral-oil based lubricant at the same time. Polyurethane bushings do not last as long with petroleum-based lubricants!
**A note about retrofitting your ORGS, JKS, or other aftermarket track bar with our Super-Durometer bushings mentioned above: Many factory and aftermarket track bars come with rubber press-fit cartridge-style bushings installed, rather than the easily-replaceable method of using two poly bushing halves, inserted from each side of the end loop, and then sliding the included steel sleeve inside the bushings. If you have the rubber-cartridge style bushings, then you cannot use the Super-Durometer 72D bushings without first removing that rubber cartridge bushing completely from your bar. If you have one of these bars, then please order up KOR-1189-S kit INSTEAD, which includes the thick steel sleeves.
Note 2: On some factory JK Wrangler track bars, this kit is compatible with the UPPER bushings, but not the lower bushing. If your upper and lower track bar bushings do not match in size, either install our SuperDurometer bushings ONLY on the frame side, or upgrade to a nice beefy JKS track bar at the same time, so you can run the SuperDurometer bushings on the frame AND the axle side.