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Piston ring size

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hairygit:

--- Quote from: AshimotoK0 on August 25, 2015, 08:43:09 AM ---I have also seen ART marked on OEM pistond and no HM logo. On twins models though.

--- End quote ---
Yes, I found  ART on my CB175 pistons, but the fours I have worked on tended to be HM, although the general rule seems to be even if pattern pistons are fitted, if they are standard size they have no markings on the crown, whereas oversize ones have the oversize stamped on the crown, and as Bryan said, the rings are often marked too, although some people fit oversize rings and file the ends to fit standard pistons, so the crown is the most reliable guide,

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