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 gear system with derailleur number of gears 22 groupset shimano rear derailleur shimano dura ace front derailleur shimano dura ace gear shift brake lever shimano dura ace crankset shimano dura ace front chain wheel teeth 5236 bottom b