New Early BSA Unit Singles Chrome Muffler Silencer. This EMGO Muffler is perfect for your “Everyday Rider” or your “Refurbishment” Project! Comes with a Lovely Chrome Finish & Build Quality! Accepts the O.E.M. Brackets to Mount it to your frame. Measures 23.2″ in Total Length, with a 1 3/8″ I.D. on both sides. Fits all Road Model BSA Unit Singles (C15, B40, SS80, SS90, Etc) from 1959-1966 only. Please refer to your parts catalog for proper fitment.*****Please check your parts book to ensure that this Part is correct for your application!*****Made by EMGOO.E.M Part number is 40-2760 or 40-2762