Well I was not planning on buying the Akrapovic exhaust for my F800 but last week the BMW mechanic called me up (friend of mine) asking if I would like one for more than half price ($400). I agreed and raced over the BMW. So why did I get it so cheap? The mechanic made a mistake and ordered the Akrapovic exhaust for a client who dropped his F800, the client got upset with him and did not want the Akrapovic exhaust (have no idea why!!!!!). He said he would take $400 bucks for it plus my stock exhaust. So how is the exhaust? All I can say is BEAUTIFUL. You can really feel the extra horse power. She hums and sounds even better than the stock pipe (liked that sound as well) and you can really feel the extra pull. Love the way it looks, feels, rides ....... So how does it look?