Originally Posted by
Dave Mayer
If you have a 8-speed rear Campy hub, then no, it won't fit a 9,10 or 11 speed cassette.
Although you can swap freehub bodies so it will, and swap the 8 speed cam + front ratchet for 9 speed parts.
I did that when Campagolo discontinued my favorite 8 speed cassette (the 13-14-15-16-17-18-19-21) in 2000-2001.