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1982 Honda CB900F Fork Oil Seals & Dust Seals

When planning fork work on a 1982 CB900F Supersport, assess the oil seals and dust seals separately. Match the oil-seal dimensions to the installed fork, then check whether the dust-seal pair should be included in the same order.

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Honda CB1100F CB1000C CB900F CB650SC fork seal set

1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Seal Set

$23.05 USD
27-1029
Replace your big-bore DOHC fork seals with this Fork Seal Set, 39 x 52 x 11mm. Made in Japan by OEM supplier.Key Features• Fork...
New
Universal motorcycle headlight reflector rubber base 33743-425-600

Universal Motorcycle Headlight Reflector Rubber Base ~ Replaces 33743-425-600

$16.95 USD
99-4979
Upgrade or restore your Honda motorcycle’s headlight assembly with this Headlight Reflector Rubber Base — precision‑designed to replace OEM #33743‑425‑600. This rubber base provides...
Honda CB1100F CB1000C CB900F CB650SC fork dust seal set

1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Dust Seal Set

$26.23 USD
27-1048
Replace your big-bore DOHC fork dust seals with this Fork Dust Seal Set of 2. OEM-quality parts made in Japan.Key Features• Fork dust seal...
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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1982 Honda CB900F Supersport · Fork Sealing Parts Buying guide

Check both sealing components before disassembly

The original F fork is a nominal 39mm air-assisted design. The oil seals are listed at 39 × 52 × 11mm, with separate dust seals. Identify the installed fork before using those dimensions after a front-end swap.

Parts to consider

1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Seal Set 39 × 52 × 11mm oil-seal setJapanese-made fork oil seals listed for the 1981–82 CB900F.View part 1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Dust Seal Set Two-piece fork dust-seal packJapanese-made dust seals, with two supplied per pack.View part

Confirm the oil-seal dimensions in full

The replacement oil seals are listed at 39 × 52 × 11mm for the 1981–82 CB900F. Confirm the complete size for the fork being serviced. Matching only one dimension, or using the frame year after a front-end change, is not enough to establish the correct sealing part.

Find the leak before choosing the repair

Oil at the sliding seal and loss of fork air pressure are different faults. Honda’s F section shows oil and dust seals in the slider and O-rings at the air-hose connections. Inspect tube and bushing condition during seal service. Use the F procedure and a hand-operated pump for the air system; do not use shop compressed air.

Buying questions

Why might new fork seals leak again?

Pitted or scored tubes, worn bushings, contamination or damaged seal seating can spoil a new seal. Inspect those parts rather than replacing the rubber repeatedly. Oil on a tire or brake needs correction before the motorcycle is ridden.

Does a fork that loses air need new oil seals?

Not necessarily. The F air hoses and their connection O-rings are separate from the sliding oil seals. Identify where pressure is escaping and follow the F-specific inspection procedure. Use a hand-operated pump and the specified pressure limits, not a compressor.

Does a 1982 CB900F automatically need an anti-dive seal kit?

The original F fork illustrated in Honda’s 1981 service section, carried forward by the 1982 supplement, is the 39mm air-assisted fork without a TRAC anti-dive unit. If different legs are fitted, identify that fork directly before selecting its seals and service procedure.

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