I sell my personal bike DEMO,suitable for people from 176cm to 188 cm the bike is practically new,the gearbox is electronic Shimano Ultegra the buttons on both extensions and brakes trp from chrono,there is possibility to mount front derailleur since the control unit can handle it,I also give water bottle holder inside the frame,the water bottle from chrono,odometer holder, and additional rear door for water bottle holder or atrezzi