QR Code Link to This Post This is an original number 3 exhaust pipe for the early 69 thru 71 models sohc Honda CB750. HM300. There are no holes, minimal surface rust, one ding near the end and no baffles.I bought this off eBay years ago thinking I would buy one pipe at a time and build a set. Foolish me. So if you have an early CB750, this will make a really good daily rider replacement.Cash sale only.