Hardtail mountain bike type mens model 2017 series giant talon frame material aluminium frame alloy 6061 aluminium bike frame sizes inch 21 17 19 18 inch bike frame sizes cm 43 53 48 46 39 cm suspension system coil suspension fork features preload adjust lockout gear system with derailleur number of gears 27 rear derailleur shimano acera front derailleur shimano altus gear shift brake lever shimano altus crankset prowheel bottom bracke