Holistic Aerodynamics If you are looking for a lightweight, aerodynamic racing bike for fast long distances, the Rockbros PGZ is the best choice. Weight: 8.55kg / 9 kg with claws pedals Gearshift: Shimano 105 R7100 12 speed 11-34T Crankset: Shimano 105 R7100 50/34T Wheelset: ROCKBROS YANFENG SERIES 50mm Tires: Kenda 700*28C Handlebar: 400-100