Hardtail mountain bike 275 29 275 29 type mens model 2017 series cannondale trail frame material aluminium frame alloy 6061 aluminium headset tange suspension system coil gear system with derailleur number of gears 27 rear derailleur shimano alivio front derailleur shimano altus crankset shimano fc m371 front chain wheel teeth 443322 rear chain wheel teeth 11 34 chain shimano hg53 brake type hydraulic disc brake brakes shimano m315 br