Racing bike type mens geometry sloping comfort frame sizes xl l s m bike frame sizes cm 44 47 50 52 55 cm colour black model 2017 series giant tcr advanced frame material carbon fork material carbon aluminium gear system with derailleur number of gears 22 groupset shimano rear derailleur shimano 105 front derailleur shimano 105 gear shift brake lever shimano 105 crankset shimano 105 front chain wheel teeth 5034 bottom brackets p