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 silver model 2017 series cannondale supersix evo frame material carbon fork cannondale fork material carbon gear system with derailleur number of gears 22 rear derailleur shimano ultegra derailleur model shimano 6800 front derailleur shimano ultegra gear shift brake lever shimano ultegra crankset cannondale hol