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1970 Honda CB750K Exhaust Parts

Compare exhaust replacement and service parts for your 1970 Honda CB750K using the pipes already on the motorcycle. The early reproduction muffler set, genuine Honda diffuser and stock-type fittings each have their own application. Review those distinctions before combining mufflers with reused or replacement hardware.

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Currently viewing Exhaust

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-254-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000

$3.42 USD
17-2812
Replace one exhaust port gasket on your CB750 or big-bore DOHC CB with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-254-000 / #18291-MM5-860....
Honda CB kick stand stopper rubber 95011-61000

Honda CB Kick Stand Stopper Rubber ~ Replaces 95011-61000

$2.95 USD
07-4624
Replace a worn kick stand stopper with this Kick Stand Stopper Rubber "A", a direct replacement for OEM #95011-61000. Exceptionally broad fitment across the...
Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860

$6.84 USD
18-7013
Replace one cylinder-head-to-exhaust-headpipe gasket on your big-bore Honda with this Cylinder Head to Exhaust Headpipe Gasket, 1 piece, replacing OEM #18291-MM5-860. Exceptionally broad fitment...
Honda CB750K exhaust pipe flange bolt set 2 93600-08022

1969-76 Honda CB750K Exhaust Pipe Flange Bolt Set/2 ~ Replaces 93600-08022

$4.95 USD
07-4633
Secure your stock-type exhaust flange with these Exhaust Pipe Flange Bolts (set of 2), replacing OEM #93600-08022. Each set is enough for one exhaust...
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 hardware set 90146-300-020

1969-76 Honda CB750K Exhaust Hardware Set ~ Replaces 90146-300-020

$37.95 USD
73-0149
Install your stock CB750 exhaust with this 10-Piece Exhaust Hardware Set. Includes various hard-to-find hardware needed to install the stock OEM-type exhaust.Set includes:• 1x...
Honda CB750K exhaust pipe flange side detail 18236-300-030

1969-76 Honda CB750K Exhaust Pipe Flange ~ Replaces 18236-300-030

$34.95 USD
07-4632
Restore your early CB750K's exhaust with this Exhaust Pipe Flange, used with stock-type mufflers. A direct replacement for OEM #18236-300-030, fitting the 1969-76 CB750K....
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....
Honda CB750K exhaust flange clamp bolt 92101-08032-0B

1969-76 Honda CB750K Exhaust Flange Clamp Bolt ~ Replaces 92101-08032-0B

$4.61 USD
07-4636
Fasten your stock-type exhaust flange clamps with this Exhaust Flange Clamp Bolt, replacing OEM #92101-08032-0B. Fits the 1969-76 CB750K. 4 bolts are used per...
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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1970 Honda CB750K · Exhaust Buying guide

Choose early CB750 mufflers, baffles and fittings

A muffler replacement is a different project from servicing a diffuser, gasket or connecting tube. Compare the fitted pipes with each listing, then account for the separate hardware needed around the selected components.

Parts worth comparing

1969-71 Honda CB750K Stock Type Muffler Set ~ 300 Style Chrome 300-style muffler setEarly reproduction set listed for 1969–71 CB750K models. Installation hardware is sold separately.View part 1969-71 Honda CB750K Exhaust Diffuser Baffle ~ Genuine Honda 18311-300-320 ~ Replaces 18311-300-320 Genuine Honda original-pipe diffuserListed for original HM300-style CB750K0–K1 exhaust pipes. Compare the pipe style and Honda reference.View part 1969-76 Honda CB750K / CB350F Muffler Connecting Tube Set ~ Replaces 18472-300-000 Stock exhaust connecting tube setIncludes one tube, band clamp and screw for the stock OEM exhaust arrangement.View part

Related parts: Individual exhaust port gasket · Stock-type mounting hardware set · Separate stock-type pipe flange

Treat the muffler set as its stated purchase

The reproduction set is described in the early 300 style and has a 1969–71 application. Its hardware is a separate purchase. Review the fitted connecting and mounting pieces with the relevant listings before assuming the remaining items on the motorcycle can be reused without further checking.

Use a specific check for an internal diffuser

The genuine Honda diffuser is specified for original HM300-style pipes. The offered 300-style reproduction mufflers instead have built-in baffles that are not designed for separate replacement. Identify which pipes are fitted before choosing an internal service part; the shared style name is not an interchange approval.

Questions before ordering

How is the diffuser different from the reproduction muffler set?

The genuine Honda diffuser is an internal service part for original HM300-style pipes. The offered reproduction muffler set has built-in baffles that its FAQ says are not designed to be removed or replaced. Identify the actual exhaust before choosing between an original-pipe repair and a replacement muffler set.

What does a connecting tube set supply?

The listing describes one connecting tube, one band clamp and one screw for the stock OEM exhaust system. It also notes two sets used per bike. Compare the connections being serviced before selecting the order quantity.

Does a model-year match confirm aftermarket exhaust hardware?

The stock-type mounting and flange listings describe their intended arrangement. Compare aftermarket or altered pipes directly with those connections and fittings before ordering; the motorcycle year alone does not confirm every exhaust component is suitable.

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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