Straight up!

My hearing is pretty shot already from the rock music, loud bikes, loud cars, etc... I don't think it'll sway me from enjoying the sound of the wind though. I do a lot of other things that aren't good for me either, but who cares?

Now, back on topic, regarding the sport bikes, I doubt they're all designed with 120mph in mind. Sure, they're designed around bikes that do this on the track, but let's be honest, the Honda you see Racer X riding at 120 through the curves is the cream of the crop. I strongly doubt it's a random one off of the assembly line.