Honda Cr80 question please help

:confused: I have a 2002 cr80 .Will a top end and piston from a cr85 06 fit on the 02 engine.

No. The 80 had a 47mm bore while the 85 has a 47.5mm bore.

I think it will if you ues the 85 jug.

You could bore and hone it but I don't know if the wrist pin is the same dia...

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