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Old 04-25-2014, 12:03 AM
fischer550 fischer550 is offline
Motorized Bicycle Elite Member
Join Date: Mar 2014
Location: Fort Collins, CO
Posts: 233
Default Re: Bought bottom end from Boy Go Fast, should I be worried?

Ok, well I just want to know when I get my bottom end if it is a 38mm or a 40mm. What do I measure to know which one I have?
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