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I'm not sure about that. I have a R8000 rear mech working just fine with the older series front mech. I've never updated firmware.
hippy-
Yeah 11speed and 11speed 👍🏻
I know it’s a front mech but apparently an 11speed rear and 10speed front don’t work together@TooTallTim 6770 shifters don’t care if they’re 10 or 11 speed...
@grams yes, this
mattyc
As far as I’m aware (from reading the internet) a 6770 front and 6870 rear won’t work together, mechs need to be the same series - 6770 shifters will work for 11speed though.
I’m about to build a bike with external battery as over the winter it’s less practical to bring a wet/muddy bike into the house to charge it as I had to with internal battery bike, just a thought... plus the charger for internal batteries are overpriced at £60 odd!