Is the original Reen disc 10 speed compatible?
Bump to keep on first page. Come on. Someone knows this.
Shimano or Campagnolo? Actually does not matter because as long as the freehub can handle a 9-speed cassette designed for the same manufacturers spline pattern (ie Shimano freehub requires a shimano splined cassette or at a minimum a Shimano compatible conversion cassette), then the freehub will also handle a 10-speed cassette.