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1969 Honda CB750K Mufflers, Baffles & Shields

Compare mufflers, internal baffles and shield parts for your 1969 Honda CB750K. The available items cover specific stock-style exhaust jobs, rather than generic packing supplies. Identify the fitted mufflers first, particularly when choosing the genuine Honda diffuser described for original HM300-style pipes.

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1969 Honda CB750K

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Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Mufflers, Baffles & Packing

Honda motorcycle parts

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Honda CB750K CB350F muffler connecting tube set 18472-300-000

1969-76 Honda CB750K / CB350F Muffler Connecting Tube Set ~ Replaces 18472-300-000

$19.95 USD
73-0909
Replace your stock muffler connecting tube hardware with this Muffler Connecting Tube Set for the stock OEM exhaust system. Includes 1 tube, 1 band...
Honda CB750K exhaust heat shield with hardware 18315-300-020

1969-76 Honda CB750K Exhaust Heat Shield with Hardware ~ Replaces 18315-300-020

$74.95 USD
33-0001
Restore your CB750K exhaust heat shield with this Exhaust Heat Shield with Hardware. Includes one heat shield for one muffler and the hardware to...
Honda CB750K muffler shield hardware set

1969-76 Honda CB750K Muffler Shield Hardware Set

$9.95 USD
73-0997
Replace your muffler shield hardware with this 12-Piece Muffler Shield Hardware Set, used to attach the muffler protector cover (shield) to the stock muffler....
New
Honda CB750K stock type muffler set 300 style

1969-71 Honda CB750K Stock Type Muffler Set ~ 300 Style

$2,995.00 USD
80-41005
Upgrade your exhaust system with this Stock Type Muffler Set — a high‑quality reproduction of the classic 300 Style mufflers for early Honda CB750K...
New
Honda CB750K exhaust diffuser baffle 18311-300-320

1969-71 Honda CB750K Exhaust Diffuser Baffle ~ Genuine Honda 18311-300-320 ~ Replaces 18311-300-320

$89.95 USD
99-5235
This genuine Honda exhaust diffuser baffle fits inside the original CB750K HM300 muffler to help control exhaust sound and backpressure. It is a smart...
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1969 Honda CB750K · Mufflers, Baffles & Shields Buying guide

Match the baffle or shield to the muffler you have

Internal diffusers, connecting tubes and external heat shields are separate parts. A replacement muffler can also change the compatibility checks, so compare the actual pipe style before selecting related fittings.

Parts worth comparing

1969-71 Honda CB750K Exhaust Diffuser Baffle ~ Genuine Honda 18311-300-320 ~ Replaces 18311-300-320 Genuine Honda HM300 diffuserListed for original HM300-style CB750K0–K1 pipes and 1969–71 models. Supplied individually.View part 1969-76 Honda CB750K Exhaust Heat Shield with Hardware ~ Replaces 18315-300-020 Heat shield with hardwareOne stock-type shield with three bolts, three washers and six spacers. Check the quantity required.View part 1969-76 Honda CB750K / CB350F Muffler Connecting Tube Set ~ Replaces 18472-300-000 Muffler connecting tube setFor the stock OEM exhaust; includes one tube, one band clamp and one screw.View part

Related parts: Hardware set for one muffler shield · Early 300-style muffler set

Check internal parts against the pipe itself

The genuine Honda diffuser is described for original HM300-style pipes. Compare the muffler style and reference in the full product listing, especially after an exhaust replacement. Do not assume an internal baffle fits merely because another muffler product shares the same motorcycle model range.

Choose shield and hardware purchases deliberately

The shield-with-hardware listing includes a shield and its fitting pieces; the hardware-only set is for attaching one existing shield. Review what you already have before choosing between them. Connecting tubes are another separate purchase, with their own stock OEM exhaust requirement and supplied contents.

Questions before ordering

Will the diffuser fit aftermarket mufflers?

The listing specifies original HM300-style CB750K0–K1 pipes and asks buyers to compare the muffler style and Honda reference. It does not make a universal aftermarket claim, so verify replacement pipes before selecting this internal component.

What does the hardware-only shield set cover?

The twelve-piece set attaches one stock muffler shield and includes three screws, three metal washers and six fibre spacers. The listing calls for two sets when replacing the hardware for both stock-type shields.

How many connecting-tube sets cover the described stock exhaust?

Each connecting-tube set contains one tube, one band clamp and one screw. Its application calls for two sets per bike. Order for the joints being renewed and check the fitted exhaust before relying on that stock-type quantity.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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