Thread: Pk80/68.5
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Old 02-07-2011, 06:49 AM
oldtimer54 oldtimer54 is offline
Motorized Bicycle Elite Member
Join Date: May 2010
Location: On a bike
Posts: 539
Default Re: Pk80/68.5

Iam wondering what the numbers stamped on our pistons mean? Your piston is stamped with a 3 mine is stamped with a 4? Is it a size thing? Whats up with the numbers on these pistions?
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