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NDS crank arm keeps coming loose

1K views 6 replies 5 participants last post by  txn 
#1 ·
Ultegra 6500 crankset (Octalink). I’ve been having issues with the NDS bolt backing out as I ride. I’ve retightened and torqued to spec many times. Also, it’s done this with two different bottom brackets. Any suggestions on what to do next?


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