Was just about to answer that. Campag changed the spline pattern when moving from 8 speed to 9 speed (but have kept it since then) so the two are not interchangeable, unfortunately.
@andyp started
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Was just about to answer that. Campag changed the spline pattern when moving from 8 speed to 9 speed (but have kept it since then) so the two are not interchangeable, unfortunately.