Offered is a hard to find complete set of (4) VTG OEM Honda stock OG mufflers designed for placement of your 1977 or 1978 CB550K motorcycle. This muffler lot includes ALL the original OEM fittings and bears the manufacturer part numbers pictured. EX overall condition pictured.  Bone stock Honda Mufflers (4) four are great addition to return your motorcycle to to stock and is sure to enhance the overall look and feel of your VTG ride. Thanks for looking.