What's the difference in f4i f4 an what not

 

the name

Maybe be more explicit in what you mean.
Do you have a bike in mind you want to buy, or don't you know what bike you have?
You want to know wheter te igintion coils are different or headlights, or just te color.
please give some background information.

 

The f4 is the fourth generation of the CBR and is carbureted. The f4i is the same generation but it is fuel injected. There are other differences but these are the main defining characteristics.