Those look a lot like the pipes on my XS650, ones that were apperently "tuned specifically for the XS650 by haiden tuning". The only difference I can see is that mine have XS650 performance stamped on em ??? That being said they sound fucking amazing! My buddies have told me on several occasions that they've never heard a bike sound like that before. The bike really likes em too, noticable difference in performance over the side cut open pipes that were on it.
Im a sucker of reverse megaphones, just seems like the right can for the job.