I had to post some pictures of these little bad boys for interest sake, even though they are liquid cooled and not even bikes. They were racing at the Supermoto bike meeting I recently went to at Pembrey in Wales and are know as Superlites. Using a snowmobile twin cylinder Bombarder Rotax two stroke engine they go like hell. They use a belt drive transmission to give constantly variable drive ratio similar to an old Daf car. Great to see two strokes out on a circuit again, even though some of the cars have Honda Fireblade engines as an alternative.