Shimano Durace Di2 Rear Brake Disc ST R9270 + BRR9270 with Sheath

Clean cockpit. The wireless connection improves the aesthetics of the bike and ensures a quick flash change Unmatched ergonomics, perfected with feedback from professionals The SERVO WAVE technology optimises brake control Advanced materials: Compatible with cable connection (for e-bike applications). Make your DURA-ACE more with customizable button functions and adjustable ergonomics