OK, so i just picked up set of Shimano LX Hollow Tech M572 cranks. The bottom bracket that goes w/ it is the Shimano BB-ES51, i have seen them all over different web site, but they all have differnet sizes. How do you know what size is needed? What do you measure?
Also.... anyone have a little "How To" on changing Cranks and Botton Bracket?
Mtbr's 2016 Winter Biking GearReviews and Roundups
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