Since there's alot of exhaust talk lately, just wanted to share a bit of heads up from years of riding sport V-twins. Although the carbon fiber rage has subsided, many including me still like it. Carbon Fiber exhaust usually doesn't have a long life of beauty and on sport vtwins, maybe other vtwins too, has a bad habit of cracking, rupturing and in several cases blowing wide open. That I know of, Akropovich, Leo Vince(Akropovich again) and Ixil have one of the best reps of this not happening. If I remember right, they all have their first inner layer as thin metal to alleviate this problem. They may have updated their techniques, but I do know 2 bros, yoshi, viper and others have failed frequently in regards to vtwins. I have nothing against any individual exhaust manufacturers and love to see all the different material and machining, but you may want to steer clear of carbon exhaust all together.