I mounted up a shorty muffler on my F4i today.

It is a Yamaha GYTR muffler from a 06-11 R6.

My buddy had it on his bike and went down so it had some pretty bad rash on it.

I cleaned it up, slapped some paint on it and used a 35* mandrel bent pipe to install it.

I think it turned out pretty sweet. Sounds awesome too.

What it started as...



How it turned out on the bike...







This is what was on it before.

 

looks sick nice job!

 

That turned really sweet!

Great job

 

That looks great man! Any clearance issues?

...I wonder if I could chop down my 2 bros and mount it like that

 

As far as the clearance issue, it's about 1/8 inch away from the swingarm when it is fully extended with the rear tire off the ground and it actually pushes the fairing out about 1/4 inch.

It's pretty tight since there isn't supposed to be a muff crammed down there.

 

^^^^ fantastic

 

looks good! Any sound clip videos? If you plan on selling the slip on that was on it, pm me.

 

Wow. Excellent job on the repair.

 

i really like that. i was wanting to do a gp style exhaust but that looks pretty good as well. any problems with how the bike is running? in terms of not having enough backpressure?

do you have a pcIII?

 

+1 to if you have a pc.

I am pretty sure there will be issues running that short of an exhaust as the f4i's engine was not designed for such a short pipe. Even if it sounds good, and runs good, you might get some nasty issues down the road...

Just sayin...