Today’s engines get a lot more horsepower for the displacement. My 125cc four-stroke from 2006 delivers as much as a 200cc from the 1970s.
That has been my impression as I looked at the them over the last couple of months. I drove a Yamaha 125 for some time in Florida and it was a fine way to get around, even at 55 MPH. The bikes now look to be much better in all measures of quality and power.
I am really looking forward to it. It should be fun and cheap.