With the components of the 9200 Dura-Ace series, Shimano offers the very best currently available on the market. The Japanese company’s many years of experience are evident in every detail—in terms of functionality, durability, and weight. As a result, Shimano’s top-of-the-line groupset is revolutionizing Di2 components. Wired technology with a new, exclusively developed transmission protocol now delivers the fastest shifting in the cycling industry. To make the rear and front derailleurs as compact and aerodynamic as possible, these components are connected to the new BT-DN300 internal battery via an E-Tube cable.