FCM91251C FC_h_M9125 XTR crank set without ring, 55 mm chain line, 12_h_speed, 17_z_ mm Shimano XTR Grey _fsla_ Black Single 455_z_17_z_89_z__z_25 Parts 455_z_17_z_89_z__z_25 Shimano Latest Series Shimano XTR FCM9125 Single CRANK SET XTR M9125 55mm 12s 17