Shimano are dedicated to supplying high-quality and high-performance components for different types of bicycles made in various countries and regions of the world, ranging from bicycles for the world's top racers and daily users. The Dura-Ace, Shimano's flagship components in the racing world, always adopts our latest cutting-edge technologies like the Di2. The Di2 (Digital Integrated Intelligence), which was developed to enhance the potential of the components by fusion with electronic devices, has dramatically improved the product line-up, which was developed to provide more comfort and pleasure for commuting and shopping closely related to everyday life. The series features, for example, low maintenance by the internal geared hub and easy pedalling even while the light is on by the built-in hub dynamo. At Shimano, we pursue the creation of new designs and easy-to-use functions by keeping one jump ahead of the users' imaginations. Shimano realised that innovative new products excelli