The issue Jerry is referring to was limited to the first generation SwayLOC. The dates of the posts in the links to other jeep forums found in Post #1 suggest that the issue was remedied 14 years ago.*
The first photo in Post #1 allows a comparison of the Antirock torsion bar and the SwayLOC torsion bar. Both neck down to 0.75" in diameter, they are nearly the same length, and it is my understanding that they are made from the same chromoly steel.
View attachment 222119
________________________________
* The first generation SwayLOC employed a splined torsion bar with a single diameter rather than necked down as the torsion bar is now. In combination with the threaded hole for the retaining bolt this created a stress point that resulted in breakage. The second generation resolved this problem, but not without some well deserved ill feelings held by previous generation customers who could not obtain replacement parts, now "NLA" due to the design change, who were required to pay for an "upgrade kit."
This thread compares the current SwayLOC with the Antirock and stock antisway bar with disconnects. ORO company history deserves its own thread.