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Old 04-24-2014, 09:27 PM
KCvale KCvale is offline
Motorized Bicycle Elite Member
Join Date: Feb 2010
Location: Phoenix,AZ
Posts: 3,555
Default Re: Bought bottom end from Boy Go Fast, should I be worried?

Sorry, I can't help but snicker at even mentioning 80cc talking about these little 2-stroke engines.

A CC measurement is Cubic Centimeters of displacement of the piston in the cylinder from TDC to BDC.

Exact mm measurements of cylinder bore x piston stroke movement = total Cubic Centimeter Displacement and nothing is 80cc.
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