Cleaning my bike off I noticed this. I haven’t hit anything while riding and I’m pretty good about maintenance. As far as I can tell, nothing in my drivetrain is misaligned and I don’t shift under stress. The chain is broken in 3 places, though. Chain is the shimano XT CN-M8100 12 speed. I use muc off drivetrain cleaner on it and muc-off dry lube. The r/mtb sub had some good inputs but then my post got removed.

by Solid_Science4514

3 Comments

  1. Southern-Accident108 on

    Can be fake chain, but maybe its just stress..

    I broken some links before, but last thing i would want is chain snapping while sprinting..

    Replace it 😀

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