UCI-certified and geometric design for long-distance endurance and comfort, this frame suits general sports and racing. The frame’s dynamic lines express the bike’s enhanced aerodynamics and agile handling. With its carefully crafted details, it embodies an aero road bike that unites all its functions and features into a perfect whole. The clear, dynamic form speaks for itself. Shimano’s new 105 R7120 half-set 12-speed transmission and Shimano 105 hydraulic brakes keep you safer and more confident on different roads. Size Chart： 45:155-165cm 48:163-175cm 51:174-184cm 54:182-195cm