Pro Circuit Ti-6 Complete exhaust with carbon fiber end cap for 2019-21 KX450 (part # 0321945F). I just bought this exhaust two weeks ago. and put about 4 hours into sanding, polishing and bluing the titanium (as seen in the first picture) just to get a phone call the next day saying that my order for the Ti-6 pro had been filled. I didn’t personally get a chance to use this exhaust but the gentleman I bought it from had put 3.6 hours on it, on his practice bike before retiring from riding. Asking $700 which I paid $800 for.