mounting a muffler beneath the rear fender/tail?

[frickin_laser]

I am considering doing this to my bike. I've seen it on some of the newer liter-engined bikes, and I thought it looked good. I plan to raise the rear suspension and inch or 2 for clearance (i'm light-175 lbs) with a Katana shock. Does anybody have knowledge or pictures of this? Which muffler would be best?

[stefman722]

That would be extremely hard to do! but best of luck to you if you do it!

[JamesG]

I've thought of this too. And it will be hard to do.  The pipe will have to snake up behind the foot peg, past the swingarm, and up into the subframe. You will need at least 2 90 degree bends with probably a few 10s in there too. Very complicated and expensive to have made unless you get lucky and find some tubing in the right diameter and shapes and can weld them up yourself.
The end can is almost simple in comparison. I would pick an oval can turned sideways myself, or perhaps a can designed for a CBR600RR or 05' ZX6RR.  
You will have to do away with the GS's inner fender/undertray and find away of insulating the exhaust from the seat and bodywork.
Last but not least, you will have to redesign the tail lights too.

Alot of work especally for something that will add weight and hurt top end performance (longer length = slower low pressure pulse).

But it would look pretty cool...

[dgyver]

Besides what James mentioned, you may have to modify the subframe as well. Bob Broussard is doing it on his latest race bike. The exhaust is from a Ducati. He also does not have all the street stuff to deal with. Most everything under the seat will need to be relocated.

[JamesG]

Sweet.  

Looks like everything from the tank back is TZ250.

[dgyver]

yep TZ250. The rest of his pics are in the gallery. GSXR1k swinger.

Another view:

http://www.gstwins.com/gallery/albums/userpics/10021/000_0135.JPG

[JamesG]

I want my GS back...  

[D-Day]

I mounted the exhaust under the seat.

Won't fit under the stock seat, used the James G solo seat.  Relocated the rear master cyclinder, and that was it.  Need to use a longer shock also.

[Church6360]

if you want to know what the underseat  CBR1000RR can looks like not on a CBR and not under a seat check out my bike here.
http://www.gstwins.com/forum/viewtopic.php?t=20345

it's pretty wide, or in my case tall.

the CBR600RR may have a smaller can.
the 1000 can was to wide for the subframe, so i mounted it like that.
nice part is that it stays cool enough that i don't melt my shoe, my right heel hits it somtimes.

[Narcissus]

Nice looking bikes boys, ever think about painting yours matte black Church?