Top end job on a 2 stroke easy.
Top end on a 4 stroke, my head hurts thinking about. :{ :{ I know 2 strokes are done, Kawasaki did not even offer the KX125 for sale in the United States this year. If I was in the market for a new bike it would be a 4 stroke. Easier to ride, top end last longer, no pre mix of fuel way easier to jet. Still, I love the sound of a pack of 125's going around the first corner. I guess the 85 at the start of a race will have to do.

