Maximum output of a 50cc engine using "todays technology"!

The expert:
"The best horsepower we attained at Aprilia last year (2007 125cc GP) was 53,9 HP at 13000 rpm. This means a Pme of 14.88 at a piston speed of 23,6 m/sec. Using these same values means that a single cilinder 50cc would give 29.5 HP at 17850 rpm and a 50cc twin would give 39 HP at 23600 rpm, measured at the gearbox output shaft. I am 100% sure these values can be attained although it never will be proved due to lack of interest and money. Remember that 50cc development was stopped in 1983 and enormous progress was made in the following 24 years. Now, sadly, also the development of the 125cc two strokes has stopped, the two stroke will only survive in karting but there will be no progress because of the very strict regulations!"
Jan Thiel 2008

Those are some amazing figures - though ive often wondered what sort of power small engines could've been making by today if the Italians hadn't been allowed to alter grand prix racing rules to suit them years ago.

Instead of learning on a two stroke single i could've been buzzing about on an oval pistoned 50cc V4 or something equally mind blowing. Probably with equally unreal performance.
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After years of moaning about immigrants now i am one...