I'm trying to identify which supertrapp slipons were on my bike when I purchased it. I will post a pic later when I have access to my bike. They are slightly tapered on the last 3-4" of the pipe and have a perforated screen type baffle across the pipe at the beginning of the taper. There are no discs and the ends are open except for the screen type baffle. They sound really good, similar to stock but have a nice deep rumble and come alive when you get on the throttle. I actually haven't heard a local bike with a similar sound - just curious if anyone is running these? I looked on the website but they don't have any pics where it shows directly in the back of the pipes.

 

If you take the muffler cap of the end of the muffler and look at the baffle coming out the back of the pipe, the SuperTrapp "SE Touring" muffler will have a cone type shape with a 1.5" (est) hole in the end. The cone is made from a perforated (little round holes) metal material.