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1973 Honda CB450K Fork Top & Covering Parts

Compare the top and covering components fitted to your 1973 CB450K fork before ordering. The top bolt is an individual purchase with O-ring, while internal clips and gaiters supply sets of two. Identify the cover rubbers and reflector supports, especially where the fork has changed.

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Currently viewing Fork Tubes, Springs, Seals & Boots

Honda motorcycle parts

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

Honda CB750 CB550 CB500 CB450 fork gaiters 51611-300-000

Honda CB Stock Type Fork Gaitors ~ Replaces 51611-300-000

$29.95 USD
27-1061
Replace your fork gaitors with this Black Stock Type Fork Gaitors Set of 2, replacing OEM #51611-300-000.Key Features• Stock-type black fork gaitors, set of...
Honda CB750 CB550 CB500 CB450 CB400 reflector 33741-340-670

Honda CB Stock Type Reflector ~ Replaces 33741-340-670

$21.46 USD
11-2303
Restore your mid-'70s Honda's stock reflectors with this Stock-Type Screw-On Reflector with a 6mm thread, replacing OEM #33741-340-670. Broad fitment covering the 1972-78 CB750...
Honda CB750 CB500 CB450 CL450K5 fork cover rubber set 51601-300-000

Honda CB Fork Cover Rubber Set ~ Replaces 51601-300-000

$29.95 USD
73-0836
Replace your fork cover rubbers with this Fork Cover Rubber Set of 2, replacing OEM #51601-300-000.Key Features• Fork cover rubbers• Set of 2• Replaces...
Honda CB750 CB550 CB500 CB450 CL450K5 fork internal circlip set 94521-48000

Honda CB Fork Internal Circlip Set

$7.95 USD
73-1035
Replace your fork internal circlips with this Fork Internal Circlip (48mm) Set of 2, replacing OEM #94521-48000.Key Features• Fork internal circlips• 48mm• Set of...
Honda CB750 CB550 front reflector rubber base 33743-341-670

Honda CB Stock Type Front Reflector Rubber Base ~ Replaces 33743-341-670

$8.95 USD
11-2304
Fit the rubber base beneath your stock front reflector with this Stock-Type Front Reflector Rubber Base, replacing OEM #33743-341-670.Key Features• Stock-type front reflector rubber...
Honda CB750 CB450 CB350 CL350K4 fork spacer trim set 51608-300-000

Honda CB Fork Spacer Trim Set ~ Replaces 51608-300-000

$37.95 USD
27-1112
Restore your chrome fork boot tops with this Chrome Front Fork Spacer Trim Set of 2. These are the chrome ribs that cover the...
Honda CB750 CB550 CB500 CB450 CL450K5 fork gaiters 51611-300-000

Honda CB Fork Gaitors ~ Replaces 51611-300-000

$29.95 USD
27-1089
Replace your fork gaitors with this Black Fork Gaitors Set of 2, replacing OEM #51611-300-000.Note: these are about 1.75" shorter than the stock type...
Honda CB500K CB450K CL450K5 front fork tube cap bolt with o-ring 90123-323-010

1971-74 Honda CB500K / CB450K / CL450K5 Front Fork Tube Cap Bolt with O-Ring ~ Replaces Honda OEM 90123-323-010

$23.85 USD
29-6019
Replace a damaged, rusted, or rounded front fork tube cap bolt on the Honda CB500K, CB450K, and supported CL450K applications listed below. This aftermarket...
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1973 Honda CB450K · Fork Tubes, Springs, Seals & Boots Buying guide

Check each fork component’s own reference and purchase scope

The top bolt uses 90123-323-010, without a stated thread size. Clips are 48mm against 94521-48000. Stock-type gaiters use 51611-300-000; another listing using that reference is about 1.75 inches shorter. Cover rubbers and reflector parts are separate.

Parts to consider

1971-74 Honda CB500K / CB450K / CL450K5 Front Fork Tube Cap Bolt with O-Ring ~ Replaces Honda OEM 90123-323-010 Individual 90123-323-010 top boltAftermarket cap bolt with O-ring included, sold each. Compare the fitted connection and required number; exact thread dimensions are not stated.View part Honda CB Fork Internal Circlip Set 48mm internal clips, set of two94521-48000 replacement pair. Match the removed retaining component and actual fork; a different product’s clip size is not this set’s dimension.View part Honda CB Stock Type Fork Gaitors ~ Replaces 51611-300-000 Stock-type black gaiters, two pieces51611-300-000 replacement set. Compare covering length and the fitted fork before selecting the stock-type or shorter alternative.View part

Related parts: Cover rubbers, two at reference 51601-300-000 · Reflector with stated 6mm thread · Separate rubber base beneath the front reflector

Compare covering length as well as the replacement number

The stock-type and shorter gaiter listings share 51611-300-000, but the alternative states about 1.75 inches less length. Check the coverage required on the actual fork. The separate cover-rubber set and chrome boot-top trims have different references and contents, without being described as included with either gaiter set.

Verify the reflector mount independently of the rubber support

The screw-on reflector gives 33741-340-670 and a 6mm thread without its pitch. Rubber base 33743-341-670 serves the separate support beneath the stock front reflector. Compare the actual attachment and missing thread details, and confirm each purchase’s contents before treating a base as a complete reflector replacement.

CB450K buying questions

Do the clip listing’s CB750 frame notes restrict this CB450K application?

The frame-number condition is attached to CB750K fitment, while CB450K is listed for 1972–74 without it. Compare the clip removed with the stated 48mm size and 94521-48000 reference. Do not apply another motorcycle’s frame restriction to this application.

What is supplied with the fork top bolt?

The aftermarket fork top bolt replacing Honda 90123-323-010 includes its O-ring and sells individually. Select the quantity for the positions being renewed and compare the fitted fork. Neither the bolt’s thread dimensions nor the included O-ring’s measurements are stated.

What should I verify before fitting the reflector to a replacement fork mount?

Compare the actual threaded attachment with the stated 6mm reflector thread and confirm the required pitch, which is unstated. Check the rubber-base requirement separately. A shared motorcycle application does not document every replacement mount or include its fastening pieces automatically.

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