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Brommers
I've got 6770 on the wife's bike and though it all works, I wish to do a spot of upgradin', to give her synchro-shifting. I'm looking at 8050 derailleurs but can I get away with keeping the 6770 shifters? I don't think it makes much difference whether it's run as 10- or 11-speed. I already have BT-DN110 internal battery and SM-EW90A, so I think it should work but I would just like to be sure before I start splashing out moolah
Also I have the SM-BCR2 Charger but not SM-PCE2. Do I need the latter to do the setup?