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Piston question on an 01 125!

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Im doing a topend rebuild on my 125 and i was wondering if my piston is still the stock size? i bought the bike used about a year ago so i dont know if it has been bored out. On top of the piston it says 03-18 (over) 7476 and 53.94. There is a C in one corner too. I also have no manual to help me out.

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53.94mm is stock size for the piston. You have a original bore not bored over.

According to my manual for a 00 CR125 you have an "A" piston. 53.933-53.950mm

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thanks i thought it was stock but wasent postive. ill proboly be ordering it tonight from motosport outlet they seem to be the cheapest too.

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