Cyclocross bike type mens geometry sloping comfort frame sizes m l xl bike frame sizes cm 50 53 56 58 61 cm colour blue model 2017 series cube cross frame material aluminium frame characteristics double butted internal cable routing fork material carbon gear system with derailleur number of gears 22 groupset sram rear derailleur sram force gear shift brake lever sram force crankset sram force front chain wheel teeth 40 cassette s