Does anyone know what parts, if any, are interchangable between the F3 and F4? I need a front fork for a '96 CBR600F3, we found an F4 at the junk yard with a good fork, will it fit? Anything you can tell me about similarities with parts would help.

 

The only real thing that is interchangeable is the name " CBR"..the forks are 41MM on the F3 and 43MM on the F4, so it will not work

 

if you get yourself the Haynes Manual it will tell you all the specs for the 99-02 F series bikes, then you can see what parts are interchangeable. Not many to be sure.