Hey, just wondering, are these 125's and 250's two stroke engines, because I just can't imagine a 125 four stroke to be able to go that fast, sorry, I just don't really follow road racing much, and if the 125 class is four strokes, do they use cbr 125's to do so, or Kawasaki ninja 250's, because, I just can't believe that these gutless machines could go so fast