Scooterpilot, ya know I didnt measure how much I cut off, I did more measuring of how much clearance I needed to pass the cowl ring. I had to extend my cowl opening to go just behind the exhaust tubes, did this by using construction paper/card stock to make a template. Then transferred that onto my cowl and cut just shy of my measurements, I like to sneak up on it LoL. Then I measured down from the engine box to the top of the cowl ring and used that to make a guess-ta-mate. I then cut the exhaust tubes and mocked it up and just needed to trim about a 1/8th of an inch more and thats what you see now. I can measure the tubes from the muffler body to the end and post that measurement if you need??? Let me know.