I blew a hole in the piston on my 2001 yz 125. The Cylinder has some left over peices ''welded'' to it. Can I solve this problem by boring or do I need to buy a sleeve?
It would be best to take it into a shop and have the machinist check it out before buying any parts, he should be able to guesstimate the amount of over bore required if it is at all possible, once you have this information, you can source the nessessary parts.
some of these type of parts are non returnable, best to play it safe.
hope this is of some help.
Ed
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