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Everything Dirt Bike
General Dirt Bike
Athena cylinder
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<blockquote data-quote="Nighthawk016" data-source="post: 74514" data-attributes="member: 334"><p>i vote measure with a set of dial calipers... the cylinder is supposed to have .002" of clearance for the pistons thermal expansion, so whatever piston you get, say a 54mm piston will measure almost exactly at 54mm or ~2.126" so the cylinder needs to be 2.128", thats how you decide what piston to get <img src="https://www.dirtbikeaddicts.com/static/images/smilies/thumb.gif" class="smilie" loading="lazy" alt=":thumb:" title="Thumb :thumb:" data-shortname=":thumb:" /></p></blockquote><p></p>
[QUOTE="Nighthawk016, post: 74514, member: 334"] i vote measure with a set of dial calipers... the cylinder is supposed to have .002" of clearance for the pistons thermal expansion, so whatever piston you get, say a 54mm piston will measure almost exactly at 54mm or ~2.126" so the cylinder needs to be 2.128", thats how you decide what piston to get :thumb: [/QUOTE]
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Everything Dirt Bike
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Athena cylinder
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