PF30 Press fit adaptor, black, SR-compatible

Thanks to enlarged bearing axle and the bearing shells pressed directly into the bottom bracket shell, the KCNC Press Fit BB30 bottom bracket is extremely stiff, robust and saves weight compared to a conventional bottom bracket. In conjunction with a crank with 30mm axle diameter result in new standards in the ratio of stiffness to weight. The advantages of the Pressfit 30 standard: - lighter - stiffer - lower Q-factor (narrow cranks) - more durable due to increased bearing diameter.