I have been up to about 170 on my Ducati and 180 on the Busa (2000, no restriction, without NOS injection). I was scared to death thouygh. I have a personal goal of going 200+ on the Busa (Ducati is limited to like 189 or whatever). Right now my bike is capable of going 201-206mph without the NOS. With the NOS, its estimated it would put down 240-260hp to the rear wheel so bye bye and the speedo only goes to 220 sooo...hmmm. of course I will be doing this all on the track mind you. I think the fastest on the street is probably closer to 160 on both bikes. And yes, most crotch rockets can go that fast, just takes them a lil longer.