Emgo Turn-out Style Universal Muffler 80-62620 Megaphone muffler is 26 L; Megaphone wide-mouth is 24 L Shorty muffler measures 12 L Turn-out muffler is 19 L and fits 13/4 and 11/2 pipes Dunstall-replica mufflers available in wide-mouth outlet (271/4 L) or reverse-cone style (273/4 L) BMW replica mufflers are replica of OEM mufflers and fit 1970 and later twins