I have't paid attention to cranks for a while so am a bit out of touch. Are XTR cranksets now fully compatible with the other Shimano cranksets or do they still differ in parts fit? I know that XTR used to use a 5 arm spider, but these days they look to be 4 arm like XT/SLX/etc.
Second question: If I want to run a BBG bashwich with a 32T middle ring, can the arms for a 2 ring crankset be used? i.e. are the arms identical to the 3 ring sets?
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