I have a GYT-R slip on with apx 750 miles on it. Its carbon fiber, with no dents dings scratches what so ever. You can view the pipe and see the dyno charts on the yamaha website. This pipe sounds awesome and it has a deep tone to it. I currently have 2 R1s and I'm selling one of them and the guy who is buying my bike has a full system from his '02, so I told him I wanted to keep the pipe. I plan on buying an '04 so this is why I'm selling the pipe. Ill take $375 shipped inside the US. PM me if you have any questions.