Bike and Cycling Forum > Bike Rack > Beginners Forum > bb size
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Old 08-24-2010, 01:51 AM   #1
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bb size
how do i find the bb size of my circa 1992 trek 800. I wanna upgrade the crank and also the bb.


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Old 08-24-2010, 04:44 AM   #2
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Remove it, and see what it says inside. Unless you have some really big calipers.


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