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1974 Honda CB450K Fork Cap, Clip & Boot Choices

Check the fork fittings retained on your 1974 CB450K before choosing caps, circlips or boots. The cap bolt is an individual purchase with its O-ring, while clips and stock-type gaiters supply two. Compare references and measured fit where fork tubes or external attachments have changed.

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Currently viewing Fork Tubes, Springs, Seals & Boots

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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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1974 Honda CB450K · Fork Tubes, Springs, Seals & Boots Buying guide

Compare contents and measurements at each fork attachment

Cap 90123-323-010 includes an O-ring and is sold each, without thread figures stated. Internal circlips reference 94521-48000 at 48mm, set of two. Stock-type gaiters replace 51611-300-000; another listed gaiter set is about 1.75 inches shorter.

Parts to consider

1971-74 Honda CB500K / CB450K / CL450K5 Front Fork Tube Cap Bolt with O-Ring ~ Replaces Honda OEM 90123-323-010 Fork cap bolt sold each with O-ringAftermarket replacement for 90123-323-010. The description does not state thread diameter or pitch; set the required quantity and compare any changed fork.View part Honda CB Fork Internal Circlip Set 48mm fork internal circlips, set of twoReplaces 94521-48000. Check the fitted fork’s clip requirement; the stated size does not identify every retaining groove on replacement fork components.View part Honda CB Stock Type Fork Gaitors ~ Replaces 51611-300-000 Two black stock-type fork gaitersReferences 51611-300-000. Compare the retained boot arrangement and required length rather than treating every gaiter with that reference as dimensionally identical.View part

Related parts: Two chrome trims for fork boot tops · Screw-on reflector, stated 6mm thread · Separate front reflector rubber base

Keep the cap’s supplied seal separate from its thread fit

The 90123-323-010 replacement explicitly includes an O-ring and is sold individually. Identify the cap and sealing requirement on the fork fitted. The description does not give thread diameter or pitch, so obtain those dimensions for a changed tube instead of borrowing them from another cap design.

Compare boot coverage before choosing a gaiter style

Both gaiter listings replace 51611-300-000 and supply two, but the alternative expressly measures about 1.75 inches shorter than stock type. Compare the required coverage and attachment arrangement. Fork-cover rubbers and chrome boot-top trims are separate referenced parts; a gaiter purchase does not describe them as included.

CB450K buying questions

What should I check when choosing gaiters for changed fork covers?

Compare the boot’s mounting fit and required length on the actual covers. Stock-type and shorter gaiter options share 51611-300-000 and two-piece supply, while the alternative is about 1.75 inches shorter. Resolve missing dimensions rather than deciding from the reference alone.

What information is needed for the internal circlips in replacement fork parts?

Identify the required retaining clip and groove on those parts, then compare the stated 48mm size and 94521-48000 reference. Two circlips are supplied. The description does not provide every groove or clip-section measurement needed to verify an undocumented replacement fork.

Is a thread pitch specified for the screw-on reflector?

The reflector description states a 6mm thread without giving its pitch. Compare the fitted mount and confirm the required thread details before ordering. The front reflector’s rubber base is separate, under reference 33743-341-670; check its shape and needed contents independently.

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