I use a Park Tool device to check for stretch on my derailleured bikes - can the same tool be usefully deployed on a 1/8" 'track' chain, does anyone know?

If not, how then to check for wear?

1 Answer 1


The 1/8" refers to the width of the rollers in the chain (also the width between the side plates of the links). All bicycle chains have a 1/2" pitch (length of a link) which is ANSI standard.

Therefore your Park wear checking tool can be used with both 1/8" and 3/32" (derailed) chains as it checks for stretch along the length of the links.

All info on wikipedia:


  • Would be nice with some elaboration around if the same principles for when a chain is worn out can be applied to a shifting and non-shifting bike. Jul 24, 2017 at 9:42

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