Derailleurs aren't specific to bikes;it could be any road or MTB derailleur that's compatible with your shifters. It just has to be long or short cage,whatever you've got on there now,and the number of speeds has to match up(due to the chain width).
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X
