Racing bike type ladies geometry sloping comfort frame sizes s m l bike frame sizes cm 44 48 51 54 57 cm colours black white model 2017 series specialized dolce frame material aluminium fork material carbon aluminium gear system with derailleur number of gears 16 groupset shimano rear derailleur shimano claris derailleur model shimano 2400 front derailleur shimano claris gear shift brake lever shimano claris crankset shimano claris