RM 125 piston question


4 replies to this topic
  • richep

Posted 09 April 2009 - 03:12 PM

#1

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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  • crazy4wdracer

Posted 09 April 2009 - 04:31 PM

#2

The piston that it in it now is 56.00, stock bore is 54.00. I don't think they make overbore pistons higher than 2.00 which is what you have now so you best option would be to resleeve and get a stock bore piston.
http://cgi.ebay.com/...VehicleQ5fParts
http://cgi.ebay.com/...2|39:1|240:1318

  • BEARCHELL

Posted 06 October 2010 - 10:28 PM

#3

did you consider honeing it? might be cheaper then re-sleeving it.

  • mihylo33

Posted 07 October 2010 - 01:45 AM

#4

CAll Powerseal
http://powersealusa.com/
They are able to restore stock dimensions on any cylinder and they can even plate cast sleeves.

  • aakmetz

Posted 07 October 2010 - 08:20 PM

#5

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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