The fastest I ever traveled on a bike was on a 92 ZX-11 Ninja,and that was exactly 152 mph according to it's speed-o that I only took an instant to glance at, and it was still accelerating when I let off.
I was an import bike mechanic about 2 years before I started running my harley shop. The ride I'm talking about was after I did a valve adjustment and carb retuning on that bike. It was amazing how quick it was, and amazingly uncomfortable,,lol.
At anyrate, they are amazing for what they are designed for, I can't argue that.
Speaking of pride and joy, here's a pic of mine, and I'll "drag" race any crotchrocket on the planet, as I figure to really dragrace is to face opposite directions and chain both bike's rear axles to each other and see who "drags" who.

By the way, my bike's engine and tranny is probably older than most of the crotch rocket riders themselves.
Jeep