Hello everyone. I was wondering if wheels off of a 91 600 f2 would fit on my 90 600f ? Would it be a straight swap ?

 

No.

 

Any idea what I might have to do to make them fit?

 

On the rear, not sure if it's even possible. The F2 has a 5 inch wide rear wheel and the F1 is only 3.5". On the front, you'd probably have to swap the entire front end. I'm pretty sure the F2 has a wider front wheel and the rotors won't line up with the F1 calipers. But if you're going to do a front end swap then you'd want to use something more modern anyway. All CBRs have the same size steering stem so any complete front end is a bolt-on mod.