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Exemple : oil filter (filtre à huile) ou une référence OEM.

1981 Honda CB900C — Tubes, ressorts, joints et soufflets de fourche

Identify the fork seal location before ordering parts for your 1981 CB900C Custom. The oil seals, dust seals and cap O-rings are separate products, each serving a different point. Check the fitted fork and its surfaces before treating new seals as the whole repair.

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Consultation en cours Tubes, ressorts, joints et soufflets de fourche

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Honda CB900 CB750 CB650 CB550 fork seals

Honda CB900 / CB750 / CB650 / CB550 Fork Seals

$21.95 USD
27-1028
Replace your DOHC Supersport or Nighthawk fork seals with this Fork Seal Set, 37 x 50 x 11mm. Made in Japan by OEM supplier.Key...
Honda CB900 CB750 CB650 fork cap o-ring set 2 91344-PC9-004

1980-83 Honda CB900 / CB750 / CB650 Fork Cap O-Ring Set/2 ~ Replaces 91344-PC9-004

$2.95 USD
73-0915
Replace your fork cap O-rings with this Fork Cap O-Ring Set of 2, replacing OEM #91344-PC9-004.Key Features• Fork cap O-rings• Set of 2• Replaces...
Honda CB900 CB750 CB650 CB550 fork dust seal set

Honda CB900 / CB750 / CB650 / CB550 Fork Dust Seal Set

$25.95 USD
27-1050
Replace your DOHC Supersport / Nighthawk fork dust seals with this Fork Dust Seal Set of 2. OEM-quality parts made in Japan.Key Features• Fork...
Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651

$10.95 USD
99-5383
This genuine Honda 16mm lock nut is used on compatible Honda CB clutch basket and oil filter rotor assemblies. It is a small hardware...
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Honda CB1000C CB900C rear shock fork gaitor

1980-83 Honda CB1000C / CB900C Rear Shock Fork Gaitor ~ Genuine Honda OEM

$34.95 USD
99-5459
Upgrade or restore your classic Honda motorcycle with this Rear Shock Fork Gaitor — genuine Honda OEM quality made to the factory specifications. This...
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1981 Honda CB900C Custom · Fork Sealing Parts Buying guide

Check all three fork sealing locations separately

The 1981 CB900C’s original forks are air-assisted. Oil seals, outer dust seals and cap O-rings serve separate positions. The oil-seal specification is 37 × 50 × 11 mm; inspect the tubes and identify any fork swap before choosing seals.

Parts to consider

Honda CB900 / CB750 / CB650 / CB550 Fork Seals 37 × 50 × 11mm fork sealsJapanese-made fork seal set for the CB900C application.Voir la pièce Honda CB900 / CB750 / CB650 / CB550 Fork Dust Seal Set Fork dust-seal pairTwo Japanese-made dust seals, separate from the fork oil-seal set.Voir la pièce 1980-83 Honda CB900 / CB750 / CB650 Fork Cap O-Ring Set/2 ~ Replaces 91344-PC9-004 Fork-cap O-ring pairTwo O-rings, reference 91344-PC9-004.Voir la pièce

Assess the fork condition before installing seals

Damaged tube surfaces or an altered fork assembly can change the repair needed. Compare dimensions and use the correct inspection procedure before ordering. The model-specific seal application does not establish that every component of an old or modified fork is sound.

Prepare for air pressure and the correct year’s fork data

Honda warns to release fork air pressure before cap removal and notes that the caps remain spring-loaded. Use the CB900C procedure and suitable protection. The 1981 addendum revises fork service data, so keep the correct year’s instructions with the repair rather than treating a shared seal size as a universal refill specification.

Buying questions

Will new oil seals cure a leak caused by a damaged fork tube?

Inspect the tube’s working surface and the rest of the fork before ordering a seal-only repair. Pitting or damage can compromise a fresh seal. The separate dust-seal pair protects the outer area but does not repair the tube or replace the internal oil seals.

Can the fork caps be removed as soon as the front wheel is unloaded?

The original forks still contain air pressure and spring load. Honda’s procedure releases the air first and warns about the spring-loaded caps. Plan the correct disassembly equipment and procedure before opening them to replace cap O-rings.

Do all 1980–82 forks use identical service quantities because the seals match?

No. Honda revised fork specifications in the 1981 CB900C addendum. Follow the base manual with the applicable year addenda for the fitted fork, and identify a swapped assembly separately. The common seal dimensions do not establish its spring or fluid specification.

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