From what I've been told Arrow is the actual producer of the exhaust. I believe it completely its very high quality stuff.I snagged it off Ebay for 320 shipped its titanium with a carbon fiber end.You will love either bike the Aprilia Factory is just mind blowing to ride in the mountains and it feels like your going 150mph just sitting on the thing and its absolutely sexy. The KTM 1290 GT is a far better street bike with a few mods it will run right next to the Aprilia in a straight-line. The KTM suspension is magic and that motor is just insane. You literally have to ride it like an inline 4. If I could only have one bike it would be a KTM 1290 GT it just checks all the boxes.