The new Dura Ace from Shimano is answers the question of many pros and ambitious amateurs as to whether and how the current, immensely high level of performance could be further increased. Each individual Dura Ace R9170 component is designed to work as efficiently as possible with all other components of the system. This shows the core of Shimano's component-developed-as-a-system philosophy particularly clearly. The result is called SYSTEM SUPREMACY - the superiority of the system over the sum of the individual parts.The new Dura Ace 9170 group is now a reality and this Shimano Dura Ace R9170 C40 Tubeless wheelset is one of them. A rim with a slim look and the well-known silver letter print. Shimano has been known for years for its maintenance-friendly and durable hubs. In addition, you are guaranteed to get a wheelset with very good spoke tension and high lateral rigidity. Due to the low weight of the rim, the wheels have excellent acceleration and are perfect for use in the mountains.