29er mountain bike hardtail mountain bike cross country bike 29 type mens model 2017 series cube elite frame material carbon frame characteristics internal cable routing bike frame sizes inch 22 16 17 20 18 inch bike frame sizes cm 41 43 52 46 40 cm headset fsa orbit suspension system air gear system with derailleur number of gears 22 rear derailleur shimano deore xt derailleur model shimano xt m8000 front derailleur shimano xt fd m8020