Hey Tal,I removed the stock exhaust but wasn't game to chop it. I ended up using an old Dan Moto can I had on my Diavel. Made a slip in baffle 250mm long and its great. It was only temp till the werkes pipes get here. I have a feeling that I will end up keeping it on. Brackets were a pain. Its very quiet and performance is ok. Still pops a bit on decel as expected. The cure for that is dont slow down. Oh, I took the silver plastic bits off and had them painted Phantom Black. Strange that at night when you shine an led torch on it, they have a purple shade just like the phantoms clothing.