... But get this. The fitting instructions say that the arrow collectors slip onto the stock header pipes that come out of the engine. My rear cylinder has a clamp with a joiner in where the arrow part can go onto, but my front cylinder runs straight out of the engine and into the catalytic converter. I looked at the parts manual from the Ducati website and it should have a short pipe out of the engine with a clamp to join the arrow pipes on. Why would mine be different?