Dunno? Clearly I am declaring myself old as four stroke was innovative at the time I was beginning to stop riding in the dirt. Very few guys trusted it yet. You are likely correct, I bet it is all four stroke now. I kept the Harley and let the knobbies go. @memike had a very cool enduro I was lusting after the last time I was at his place. I think I would go that way. Blast into town for bread and milk on it. His bike was just cool as heck.