Racing bike type mens geometry classic racing frame sizes xl l s m bike frame sizes cm 48 50 52 54 56 58 60 63 cm colour black model 2017 series cannondale supersix evo frame material carbon fork material carbon gear systems with electronic gear shifting with derailleur number of gears 22 rear derailleur shimano dura ace di2 front derailleur shimano dura ace di2 gear shift brake levers shimano dura ace shimano dura ace di2 crankset c