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Discussion Starter #1
I am going to be buying a new piston and rings for my 2002 Polaris Trailblazer 250CC. I just wanted to know what the stock boresize was for that bike so I get the right size.
 

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Call Rick Ritter at Ritter Cycle Racing. Or go to gen3usa.com. That is THE place for all questions on Polaris 2 stroke.
 

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Well the piston kit I am going to get is a wiseco. Their site says that the standard boresize is 72.00MM. Would it be safe to trust that.
 

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Only if you are absolutely sure that the cylinder has never been bored out before. I would pull the head and measure the bore with a caliper myself before ordering. Only way to be sure.
 
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