Racing bike type mens geometry sloping comfort frame sizes xl l s m bike frame sizes cm 44 48 51 53 56 cm colour black model 2017 series giant defy advanced frame material carbon frame characteristics internal cable routing fork material carbon gear systems with electronic gear shifting with derailleur number of gears 22 groupset shimano rear derailleur shimano ultegra di2 derailleur model shimano 6870 front derailleur shimano ultegra d