SeeingisBelievingGTMuseum
Old School Grand Master
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cchris2lou":2nrhg87k said:Di2 is working fine ,and no reason why it should not work on a mtb .
especially with a 2 * 10 set up .
have a look on the ww forum for great ideas on how to take apart the battery to fit in the seat post or other places .
My guess is the front will shift slowly and need to be over adjusted to get to the big ring on the XTR crank. Road front mechs are designed to work on 50-54 front chainwheels and I don't think that XTR ring is that big....or is it? Chain/cog spacing on the DA7900 is also different. It's not recommened to won't interchange with 7800. If it works you can do it cheaper with Ultegra now being available in Di2