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1975 Honda CB550K Chain Guards

Two black plastic chain guards are listed for the 1975 Honda CB550K. One is described as Japanese-made, while the aftermarket version also cross-references Honda 40510-323-000B. Compare your existing guard style and mounting points, especially if the rear suspension has been changed.

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Honda CB550K CB500K chain cover guard 40510-323-000B

1971-78 Honda CB550K / CB500K Chain Cover Guard ~ Replaces 40510-323-000B

$219.95 USD
73-0001
Restore the original look and protection of your motorcycle’s drive chain with this Chain Cover Guard, designed as a direct replacement for the factory...
Honda CB550K CB500K drive chain case chain cover guard 40510-323-000

1971-78 Honda CB550K / CB500K Drive Chain Case / Chain Cover Guard ~ Replaces Honda OEM 40510-323-000

$139.95 USD
51-7254
Aftermarket black plastic drive chain case / chain cover guard for select Honda CB500K and CB550K models. This replacement helps restore the factory-style look...
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1975 Honda CB550K · Chain Guard Buying guide

Protecting the chain

A cracked chain guard lets lubricant fling onto the wheel and tyre. Replacing it restores the factory look along the left side of the swingarm and keeps the area cleaner.

Parts to consider

1971-78 Honda CB550K / CB500K Chain Cover Guard ~ Replaces 40510-323-000B Japanese black chain guardMade in Japan from black plastic, matching Honda 40510-323-000B for 1974-78 CB550K bikes.View part 1971-78 Honda CB550K / CB500K Drive Chain Case / Chain Cover Guard ~ Replaces Honda OEM 40510-323-000 Aftermarket black chain guardBlack plastic chain case matching Honda 40510-323-000, for CB550K and CB500K bikes.View part

Compare the two listings

Both guards list the 1974–78 CB550K and CB500K. The Japanese-made guard names reference 40510-323-000B. The aftermarket listing gives 40510-323-000 and a cross-reference to the B suffix, plus checks for altered mounting points. Compare those details with your existing guard.

Swapped parts matter

The aftermarket listing warns buyers to confirm the existing guard style and mounting points, especially on bikes with swapped swingarms or modified shocks. A 1975 bike that has been altered over the years may need careful checking.

Chain guard FAQs

Do both guards fit the 1975 CB550K?

Both listings name the 1974–78 CB550K. One is described as Japanese-made; the aftermarket version specifically asks buyers to compare the existing guard style and mounting points, particularly with altered swingarms or suspension.

What material are the guards?

Both are described as black plastic. The Japanese-made guard names 40510-323-000B; the aftermarket listing names 40510-323-000 and also cross-references the B suffix. Those references do not establish a supersession date or guarantee a modified mounting arrangement.

Is a grab bar or plate bracket listed here?

No grab bar or licence plate bracket is listed in this section for the 1975 Honda CB550K at present. Contact the store with the existing mounting details and part reference if you need either item.

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