MotoGP in all the brilliance of sacntion god wannbes went from 990 to 800 and now at 1000 cc.
Now they cannot have more than 4 cylinders after a as many as you wish with 990 cc 2002.
The power delivery of 4 stroke make the bikes far easirer to ride than 2 stroke explosive power delivery.
Some MotoGP have been capable of over 300 hp but are tuned to suit the track and have electronic modes to control delivery; spec. electronic control tractin control now have made the bikes far from what were and is one reason some major manufacturers are not in and others are considering leaving.