You only got 186 out of the ninja because it has a factory limiter so it won´t excced 186 MPH. If the limiter is removed it would be the fastest production bike. From the first production ZX-12R, in the 2000 model year, its top speed was restricted by a motorcycle manufacturer gentlemen´s agreement. This was due to a voluntary gentlemen´s agreement that included BMW Motorrad and the Japanese manufacturers, amid fears of government regulation of motorcycle speeds mainly in Europe. In 2000 the ZX1200 was MUCH faster than the Hayabusa but had to be restricted to the agreed upon 186MPH...