• You will however need a 1mm spacer behind the cassette for a campagnolo freehub...

    No spacer on the one I had in, which would explain why the shifting was so poor and the freehub trashed.

    If my maths is right, an 8 speed cassette is 36.9mm in total and 9 speed 38.2mm. If you add a 1mm spacer, that leaves 0.3mm unaccounted for: what happens to that?

  • find a very thin spacer then. The width you have quoted is cassette width but the big cog is dished. the freehub length between 8 an 9/10/11 speed is less than 1.3mm i think. not sure exactly.

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