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richep

RM 125 piston question

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I acquired an 86 RM 125 for my wife to ride and need to do a top end on it. The piston on it is burnt and I need to order an oversized one. My question is how do I tell what size I have now? The numbers on top of the piston are 0106A and 557M05600. Thanks for any help. Not sure if it's stock or aftermarket.

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another vote for powerseal. they'll resize it to stock bore, but you must supply a piston, or purchase one from them to get a good match, they do great work, quick turn around time too.

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