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more details on your bike would help define things, but in many cases you can resleeve old vintage cylinders once you are out of bores. Check LA Sleeve and Wiseco for starters to see what they have. Some of the older bikes already had chrome bores and starting in the 1980s or so specialized coatings like Nikasil were introduced that could rebuild the thickness of your cylinder liner to stock and go from there. Just generalized thoughts here.

Thanks. If you go the sleeve route is there any real limit to how many time you can rebuild the original engine? I mean, could someone get five or more rebuilds?

Hi! I'm new to two-stroke engines, so some of these questions might seem pretty basic to you guys. Is it possible to fit a vintage two-stroke with a replaceable cylinder liner if parts are not easy to come by for that engine? If so, would there be any real limit to the number of rebuilds that I could get out of a vintage cylinder? Thank you.