For sale is a single matte black muffler correct to S&S 2 into 2 Grand National exhaust system part number 550-0742, the system was damaged in shipping, this has nicks and scratches....see all the pictures. The original application for the complete exhaust is Twin Cam Dyna. Muffler measures 15" in length with a 4" end cap diameter. NOTE: This is one of 2 mufflers supplied with the original set. NOTE: The last picture shows what this system looks like mounted, only 1 muffler is part of this listing.