Oh, and if you want something that will easily keep up with a supersport upto silly speeds get yourself a Honda CR500 or Kawasaki KX500...in case of the latter 67.5 BHP straight out of the box...

KX has a smoother powerdelivery, the CR feels like being smacked in the face with a brick!

But if you really want to kill yourself get a 640 or even 700 cc 2-stroke single...