I would like a stages power meter on my set up but cant figure out if the bottom bracket sizes are correct and if even the new crank will fit at all?
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I just came across this and I am in the opposite boat. I have a M785 and am considering to upgrade to the XTR M9000 (1x11) groupset. I'm wondering if I can still use my XT M785 power meter? – user19300 May 1 '15 at 20:33
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Both the M785 and the M980 are hollowtech II systems and compatible. They use a compatible bottom bracket sm-bb70 and sm-bb93, which are English threaded 68/73mm.
The M980 uses the same clamping system as other Hollowtech II systems which is different to earlier xtr cranksets which required specialist tools.
The stages power meter comes as a replacement crank arm with the meter built in, so while this set up would work for aesthetic purposes wouldn't it be better to get the m785 meter?
