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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Music - licensed by Epidemic Sound:
ES_Talk Til We Drop (Instrumental Version) - Velveteen.mp3
ES_1 of a Kind - Yomoti.mp3
ES_Fizzy - El Neon.mp3
ES_Quantum Theory and Italian Synthesizers - So Vea.mp3
ES_Clearer Views - From Now On.mp3
ES_My Internet Lover - ATISOUND.mp3
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ES_Sidelined - Dip Diet.mp3

Photos: © Velo Collection (TDW) / Getty Images & © Bettiniphoto / http://www.bettiniphoto.net/

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