The Campagnolo 30mm XDR Freehub Body is the best way to get the most out of your SRAM XDR cassette and favorite wheelset. This body is compatible with the Campagnolo wheelsets with 17mm axles. With fast and long lasting bearings, riders can count on miles and miles of smooth use. If you run a SRAM XDR cassette, this freehub body is a great choice.