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Cr250 big bore

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I am going to put a cr250 motor together and I need to get a cylinder plated, so I have half a dozen 92/01 cylinders kicking around all needing a replateing .

what is a common go to size that pistons are plentifull and cheap for and no real modifications other than clearance the power valve?

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I am going to put a cr250 motor together and I need to get a cylinder plated, so I have half a dozen 92/01 cylinders kicking around all needing a replateing .
what is a common go to size that pistons are plentifull and cheap for and no real modifications other than clearance the power valve?

Wiseco makes a 68.1mm 265cc i believe it is (it is a 68.?mm 265cc for sure) that's only $100 with the top end gasket kit. You can go with a 71mm 285cc Wiseco also but has much more work involved & price is higher.

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Wiseco makes a 68.1mm 265cc i believe it is (it is a 68.?mm 265cc for sure) that's only $100 with the top end gasket kit. You can go with a 71mm 285cc Wiseco also but has much more work involved & price is higher.

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Its exactly a 68.5mm 265cc piston that Wiseco offers for the cr250 r. It is a easy to find & very common piston. I ran that size bore with said Wiseco pistons for about 4 years & it performed very well. I recently went to the 71mm about 6 months ago & it has plenty of power as well as the performance & wear & tear have so far been as to be expected.FB_IMG_1496015125686.jpgFB_IMG_1496015485835.jpg1496340722854.jpg

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