Yes, note the "spiral" oil lands/Grooves, the break is/was always along that line apparently. The new shaft has a flat ground oil channel, nothing to "ring" the shaft and create risers. Mine broke on the main waterfall going up odessa canyon (close to Calico Ghost town). Nothing unusual happened but it was enough to snap it. Since the repair, I have done the same trail twice, the big sister canyon next to it, The tough trails in Big bear and no prblems, in fact I am REALLY liking this TJ. I do miss my CJ but this is worlds ahead.