got mine about a couple of month ago, and definitly lovin it, havenĀ“t pushed it yet too much but I am at 5500 rpm at 100 km/h, so I guess you could push it to 80mph, you would have about 7000 or 7500 Rpm, which would be quite a bit there, you might get it higherr but it would be pretty uncomfortable, it is not exactly aerodynamic, this is not a bike for Speed, obviously, it is pure fun in town tho.