My bike has a Two Brothers slip on. It came with the bike, so it's not like I chose it, but I like it.

 

How loud is a 2bros compared to stock?

 

night and day difference...
very loud compared to stock

 

I've got a Jardine. People suggested that to me and I went with it. I like it.

 

Between these two choices I'd recommend the 2Bros. Personally I went with the Yosh. I've used them in the past on other things and have always been very impressed with their performance, look, and price. I think the Yosh is the best value out there. But if you have your heart set on these two, go with the 2bros.

 

Get the Two Bros. for sure. There is another F4i that I ride with that has the Jardine on it and I don't like the sound at all, it's too tinny and high pitched. My exhaust has a deeper throaty sound, which was what I was looking for when I was comparing the different exhausts. I have the C5, my friend that works at the motorcyle shop where I bought it suggested that one for my bike. I love the way it looks, sounds and performs. The only downfall to the CF is that they say you can't use them on dynos because the CF can't dissipate the heat quickly enough while doing the dyno runs, so if you plan on spending a lot of time tuning it on the dyno I'd suggest the aluminum one. However the CF part of the canister stays fairly cool while I'm riding around town... I can post pictures if you'd like to see what it looks like on my bike.

 

I would like to see the C5 on the F4i. I'm leaning towards the C2. Does anyone know what the difference would be between aluminum and titanium? Is it that the aluminum has more of a chrome look? I'm trying to figure out if the titanium is worth it.

 

I love my 2 bros. Go with the carbon fiber with a silver bike. It matches so beautifully... I mean, dope stupid fly@!

 

Ok, I'll get some pictures taken soon...the weather is really ****ty here now but I'll try to get some decent shots within the next couple of days.

 

Ok, here's a few pictures. The bike is kind of dirty but at least it'll give you an idea of what it looks like.


http://i27.photobucket.com/albums/c1...4/DSCF0097.jpg

http://i27.photobucket.com/albums/c1...4/DSCF0094.jpg

http://i27.photobucket.com/albums/c1...4/DSCF0096.jpg