I went for a short test ride yesterday, thought I would see just what kind of top end this thing would do. I've just broken the engine in and haven't pushed too hard until now. I brought the bike to 40 mph with no effort and firewalled the throttle, it was frightening how quickly it hit 45 and kept accelerating when I dropped off the throttle. I believe the engine would keep accelerating until it broke. I guess thats as fast as it will ever go since I find 30 to be very adequate. Asphalt and my hide just don't mix.