there was a sudam a couple years ago that was legal there. 2 of them, actually .. different years, I dont remember them running against each other. As long as they were under 135cc. I talked to Dan way back, a year or so before we bought our Honda, I had bought a PCR 116cc and wanted to run it. Dan kind of indicated at that time as long as it was stock stroke, and under 135cc, we were good. I think he indicated, and its been a long long time, that the stroker crank was lumped in w/ big bore kits. But I cant imagine the Sudams were stock stroke. They make a neat lil stroker 135 package
Anyway. I think it is legal at ECS, but nowhere else that I could find, which is why I bought/ built the Honda