Hardtail mountain bike 29er mountain bike 29 type mens model 2017 series cube aim frame material aluminium frame characteristics internal cable routing bike frame sizes inch 23 21 17 19 18 inch bike frame sizes cm 58 43 53 48 49 46 cm headset cube no 10 suspension system coil suspension fork feature preload adjust gear system with derailleur number of gears 24 rear derailleur shimano tourney derailleur model shimano tx800 front deraill