ok so hears the problem, im buying a used yoshimura rs-3 slipon but its coming off a gixer, so i have an f4i of course with a stock exhaust, will it fit on the f4i!
if you i can know asap that would be great thanks

 

doubt it

 

Fit is one thing, work well is another.

The throat has a certain diameter. That will tell you if it "fits". The length and the restriction inside determines the backpressure and how it's tuned.

Your call mang. If you get it installed, post-up your results.

 

I wouldn't do it.

 

Its not as hard as you think, go to your local exhaust shop, and take the bike and pipe there and they can make you a coupler, its a piece to get it to fit. like 20 bucks is all.