rpm wise???? Or basically when do you get the best performance on a cbr 600?

 

On mine ('03 f4i), I definitely feel the most torque above 6K rpm, straight up to redline.

 

Not sure about the F4, but the sweet spot on my '03 RR really starts to pull about 8 grand and continues all the way up to about 14 before it levels off way up in the stratosphere. The thing is- you'll know it when your in it!

 

Thats what I was going to say lol, get on it, take it for a spin, you'll know when you hit it lol