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Old 04-24-2014, 05:09 PM
Theon Theon is offline
Motorized Bicycle Elite Member
Join Date: Jan 2014
Location: FNQ Australia
Posts: 1,440
Default Re: Bought bottom end from Boy Go Fast, should I be worried?

Piston pin height has nothing to do with stroke.
It is to do with rod length.
You can have either piston with either crank as long as you have the right rod.
A 'Hybrid' engine usually refers to the use of a 40mm stroke with the longer rod and therefore higher piston pin.
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