• 10-speed only Shimano.

    10 speed cassettes are narrower than 9 speed so you can't fit a 9 speed cassette (or 11, or anything else), and the taller splines may prevent you doing do anyway - and also block some 10 speed cassettes.

    Thankfully rare and only found on a handful of Shimano wheelsets AFAIK.

  • Thank you! If we were to source a cassette for this what would we need to specifically search for?

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