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im in the middle of redoing my top end and im tryin to figure out the size of my piston. i was told that it should say on the piston. there are numbers on my piston: 8741C and under that is 513M06550. i was thinkin that the 6550 means 65.50mm. is this correect?

Posted

im in the middle of redoing my top end and im tryin to figure out the size of my piston. i was told that it should say on the piston. there are numbers on my piston: 8741C and under that is 513M06550. i was thinkin that the 6550 means 65.50mm. is this correect?

 

 

513M06550 is a Wiseco part number. Your piston is .060 over bore. So in other words yes your piston size is 65.50mm

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