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yep, syncro shift and DA level discs, fucking finally!
Not wireless tho :(
As with 9070 Dura-Ace Di2, Shimano’s new R9150 electronic group is still wired from the single battery to both derailleurs and the junction box. What is new is the addition of Bluetooth to the system, so you can adjust the setup with a smartphone or tablet instead of just a PC (sorry, Mac users) with the 9070 group.
Also not a huge gap between 9100 and 9000 so shimano will have to kill 9000 soon.
My fav bit:
amey
deleted
Power cranks?