I put an 8 speed cassette on there yesterday. Looked like the cassette had varying spaces between the splines. But I can't say for sure whether the freehub did. Pretty sure it's 8 speed though!
An 8 speed Exa Drive cassette will fit on a 9 speed freehub, all be it loosely: best to double-check via that link I posted.
Thanks for the link, I did have a read. it's definitely got the very shallow splines of the ultra / exa drive and no ridged spline
@Scilly.Suffolk started
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I put an 8 speed cassette on there yesterday. Looked like the cassette had varying spaces between the splines. But I can't say for sure whether the freehub did. Pretty sure it's 8 speed though!