I have lost a piece of my master link for my bike is there a way to find out what size it is so I can order a new one and replace it.

1 Answer 1


Bike chains come in two sizes. There's 1/8" chain for single speeds (bikes without a derailler) and 3/16" which is for geared bikes with a rear derailleur.

In addition you can get master links for 6/7/8 speed, or 9 speed or 10 speed or 11 speed. So count the number of cogs in your rear cassette and go from there.

Master kinks are cheap. Buy a couple, put a spare on each bike you ride.

  • 3
    The 6-8 speed quick link is generally the same, while the usual link sold for 10+ speed is one time use.
    – Batman
    Commented Nov 7, 2016 at 1:32

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