Racing bike type mens geometry sloping comfort frame sizes xl l s m bike frame sizes cm 49 52 54 56 58 61 cm colour black model 2017 series specialized tarmac frame material carbon frame characteristics internal cable routing fork material carbon gear systems with electronic gear shifting with derailleur number of gears 11 groupset sram rear derailleur sram red etap front derailleur sram red etap gear shift brake lever sram red etap