Shimano has finally unveiled its next generation top-level race group sets with Dura-Ace Di2 R9200 and Ultegra Di2 R8100. Both share the same fundamental technology which comprises 12-speed gearing with new cassette and chainset options, a semi-wireless system with an internal battery and new charging port on the rear mech, reshaped hoods for better ergonomics and massively improved disc brakes.
This is my detailed first look, a real-world review will follow shortly so make sure you're subscribed
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Chapters
00:00 Intro
1:21 What’s new?
3:17 Wireless shifting
4:27 Faster shifting speed
5:05 Batteries and charging
6:22 Ergonomic improvements
7:43 App customisation
8:43 12-speed gearing
12:41 Better Disc Brakes
15:31 New power meter
16:01 Ultegra Di2 R8100
17:51 Summary
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