Well i had my spin on the back of the R1 and i have never felt speed like that!! The guy siaid he could not give it full throttle most of the time as the front was lifting. I saw if lift two or three times!! The top speed we hit was 171 and had to slow down for cars ahead. (on the digital speedo so not sure how accurate) But all in all a great fun experience but i think i will wait till i am a bit older to own a bike as i think i would love the speed a little too much!! Cheers.