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  1. You shouldn’t expect a chain to snap full stop.

    I’ve had that happen twice in the last 20 years. Once was a newly fitted road chain on its first ride – suspect a defect there, the other was a mud choked MTB ride and that is spectacularly hard on components.

  2. A chain should never snap, but how long it will last depends extremely on riding conditions, maintenance as well as the rider’s power output.

  3. Do you have a chain wear indicator? Get a Park Tool CC-4.2 and learn how to use it properly (there’s a trick to it).

  4. Nervous-Rush-4465 on

    That is the installation pin on that chain. The other ones are peened. That one has a flat face. 2009 miles is a lot, even for a well-maintained chain. You should be looking at your cogs for signs of wear before you install another chain. If you lay out your current chain next to a brand new one, you will be able too see how much longer your used chain has become.

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