By Jim Weaver Service Manager, Fit Werx, VT Shimano recently released a new optional item to its Ultegra 6870 and Dura Ace 9070 Di2 electronic shifting systems. Commonly known as the “D-Fly”, or in Shimano parlance, the SM-EWW01, this small device is a transmitter that allows the Di2 system to communicate with many of the […]
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