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How does Shimano Di2 Actually Work?| Electronic Shifting 101

Electronic Di2 Shifting is commonplace on high end, and even mid-range road bikes now, but how exactly does it work? Alex explains the basics of a Di2 groupset and it’s workings, including clever tech borrowed from the car industry!

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Photos: © Velo Collection (TDW) / Getty Images & © Bettiniphoto /

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