I also look at the cr125 like this. that motor was most likely in development in the late 80′s or early 90′s at best. Technology has changed enormously since then yet those motors are basically still running off that early design. Now think about this for a moment. Computers and computer aided design was like unheard of back then. Hell the world wide web didn’t even exist. Cell phones… nope.
Hmmm. I was using computers to design combustion chambers, porting, reed cages, and pipes for said cr125 in the early nineties. I’m guessing that the Honda factory had a few more gigabytes than I did even in those dark ages. I didn’t see any cell phones in those days, just people talking to a shoebox with an antenna.