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Boring out 250cc?
I have the crf230 Zong clone, 65.5mm x 66.2mm bore and stroke. There are a number of big bore kits for the CRF230 but I was wondering if anyone has bored out to 67mm and ran the much cheaper off the shelf 67mm piston? it would only be about 233cc but still it a jump over 223cc. It would give it a bit more compression as well but nothing crazy.
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