Just a quick background on why. 4 week OEM replacement time,7 to 10 days for aftermarket.(Who wants to wait that long?) My stock muffler had something come apart on the inside, made the worst sounds (ever stopped next to a diesel) it was sounding as if my pistons were trying to swap holes. Due to wildlife my wife has her car in the shop,so we're down to one other car. For a total of $43.00, muffler,two 90deg pipes one reducer coupling and one clamp. I am able to go back and forth to work and enjoy the wind. OEM muffler is coming,doubt that it will ever go for a ride with me,most likely it will stay in the box for the 2nd owner if any. I enjoy being able to hear the G's that I'm pulling from leaving a red light,now into and out off left hand turns. The Duals installed are enjoyable to listen to not mad bumble bee sound. Oh rode with my Dad yesterday he has a H.D. straight pipes while on his left side was still able to hear his, so mine isn't overpowering loud.