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• #2
Do you mean 74mm BCD, there's 56, 58, 74, 86 etc http://www.sheldonbrown.com/cribsheet-bcd.html
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• #3
Yes definitely 64BCD, standard for most 4 bolt inners I believe - or at least Shimano.
I think 165mm is still going to be too long though so I'll have to reduce the cranks I've got but about 30mm and hope my pedals don't fall off!
So upon building my new bike I have met a new unforeseen foe. Toe overlap!
I either need a set of 165mm cranks with for a 64BCD inner ring OR any crank with a 28t chainring already attached.
Ideally I'd like Hollowtech ii but I'm not sure if Shimano make any 165mm MTB cranks so whatever is available.
Cheers!