Wonder how compatible the 12S Di2 is with my older 11s parts though?
They are not compatible at all, due to different wiring systems.
Arse.
There's always something wrong. I could sell on the road Di2 stuff and swap for GRX (is there 12s GRX?).
I don't have enough parts to just buy a frameset and have it rolling quickly, so liking the idea of a complete bike.
I could sell on the road Di2 stuff and swap for GRX (is there 12s GRX?).
Currently 12 speed GRX is mechanical shifting only. For reasons that are only obvious to Shimano.
@hippy started
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They are not compatible at all, due to different wiring systems.