Racing bike type mens geometry sloping comfort frame sizes xl l s xs m bike frame sizes cm 46 49 52 54 56 58 61 cm colour red model 2017 series specialized venge frame material carbon frame characteristics internal cable routing 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 rs685 crank