Subject: RE: 2015 kestrel 4000 gearing question If it came with 10 speed, then you can't just swap the cassette out to get 11... that would require new rear derailleur, chain, shifters (would recommend the front derailleur as well, although you can get away with using your 10 speed there ) in addition to the cassette. To make things even more complicated, not all 10 speed hubs are 11 speed compatible. |