The Colorado Cyclist

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Shimano BB91-A Press Fit MTB BB


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Shimano bottom bracket for Press-Fit BB91 applications. This item allows you to mount Shimano Hollowtech II mountain bike cranks to select MTB frames which use BB91 Press-Fit bottom brackets. Manufacturers part number ISMBB9141A. Please note that this item will not work unless your frame is specifically built to the BB91 standard.


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