Reverse cone megaphone muffler that fits a variety of bikes with 38-44mm head pipes. This classic "Reverse Cone" muffler looks great on vintage bikes and can be mounted on right or left side. Muffler is 17" long with a adjustable mounting strap and insert reducer spacers to fit 38-44mm pipes. Fits great on Ducati singles with 38mm head pipes. End cap is removable to access internal baffles.