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1981 Honda CB900C Custom Fork Sealing Parts

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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Currently viewing Fork Tubes, Springs, Seals & Boots

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Honda CB900 CB750 CB650 CB550 fork seals

Honda CB900 / CB750 / CB650 / CB550 Fork Seals

$21.95 USD
27-1028
1980 Honda CB900C Motorcycle Parts 1981 Honda CB750F Motorcycle Parts 1981 Honda CB900C Motorcycle Parts 1982 Honda CB650SC Nighthawk Motorcycle Parts 1982 Honda CB750F Motorcycle Parts 1982 Honda CB750SC Motorcycle Parts 1982 Honda CB900C Motorcycle Parts 1983 Honda CB550SC Nighthawk Motorcycle Parts 1983 Honda CB750SC Motorcycle Parts 1984 Honda CB550SC Nighthawk Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB550 Motorcycle Parts by Model & Year Honda CB550SC Nighthawk Motorcycle Parts (1983–1984) Honda CB650 Motorcycle Parts by Model & Year Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB750 DOHC Parts (1979–1982) Honda CB750 Motorcycle Parts by Model & Year Honda CB750F Motorcycle Parts (1975–1982) Honda CB750SC Nighthawk Motorcycle Parts (1982–1986) Honda CB900 Motorcycle Parts by Model & Year Honda CB900C Custom Motorcycle Parts (1980–1982) Series 3: CB700-750SC (82-86) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82) Series 6: CB500-CB550 (71-78)
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
1980 Honda CB900C Motorcycle Parts 1981 Honda CB750F Motorcycle Parts 1981 Honda CB900C Motorcycle Parts 1982 Honda CB650SC Nighthawk Motorcycle Parts 1982 Honda CB750F Motorcycle Parts 1982 Honda CB750SC Motorcycle Parts 1982 Honda CB900C Motorcycle Parts 1983 Honda CB750SC Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB650 Motorcycle Parts by Model & Year Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB750 DOHC Parts (1979–1982) Honda CB750 Motorcycle Parts by Model & Year Honda CB750F Motorcycle Parts (1975–1982) Honda CB750SC Nighthawk Motorcycle Parts (1982–1986) Honda CB900 Motorcycle Parts by Model & Year Honda CB900C Custom Motorcycle Parts (1980–1982) Series 3: CB700-750SC (82-86) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82)
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
1980 Honda CB900C Motorcycle Parts 1981 Honda CB750F Motorcycle Parts 1981 Honda CB900C Motorcycle Parts 1982 Honda CB650SC Nighthawk Motorcycle Parts 1982 Honda CB750F Motorcycle Parts 1982 Honda CB750SC Motorcycle Parts 1982 Honda CB900C Motorcycle Parts 1983 Honda CB550SC Nighthawk Motorcycle Parts 1983 Honda CB750SC Motorcycle Parts 1984 Honda CB550SC Nighthawk Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB550 Motorcycle Parts by Model & Year Honda CB550SC Nighthawk Motorcycle Parts (1983–1984) Honda CB650 Motorcycle Parts by Model & Year Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB750 DOHC Parts (1979–1982) Honda CB750 Motorcycle Parts by Model & Year Honda CB750F Motorcycle Parts (1975–1982) Honda CB750SC Nighthawk Motorcycle Parts (1982–1986) Honda CB900 Motorcycle Parts by Model & Year Honda CB900C Custom Motorcycle Parts (1980–1982) Series 3: CB700-750SC (82-86) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82) Series 6: CB500-CB550 (71-78)
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
1959 Honda CB92 Motorcycle Parts 1960 Honda CB92 Motorcycle Parts 1961 Honda CB92 Motorcycle Parts 1962 Honda CB92 Motorcycle Parts 1966 Honda CB160 Motorcycle Parts 1967 Honda CB160 Motorcycle Parts 1968 Honda CB160 Motorcycle Parts 1968 Honda CB350K0 Motorcycle Parts 1969 Honda CB160 Motorcycle Parts 1969 Honda CB175K3 Motorcycle Parts 1969 Honda CB350K1 Motorcycle Parts 1969 Honda CB750K Motorcycle Parts 1970 Honda CB175K4 Motorcycle Parts 1970 Honda CB350K2 Motorcycle Parts 1970 Honda CB750K Motorcycle Parts 1971 Honda CB175K1 Motorcycle Parts 1971 Honda CB350K3 Motorcycle Parts 1971 Honda CB750K Motorcycle Parts 1972 Honda CB175K6 Motorcycle Parts 1972 Honda CB350K4 Motorcycle Parts 1972 Honda CB750K Motorcycle Parts 1973 Honda CB175K7 Motorcycle Parts 1973 Honda CB350G Motorcycle Parts 1973 Honda CB750K Motorcycle Parts 1974 Honda CB360G Motorcycle Parts 1974 Honda CB360K0 Motorcycle Parts 1974 Honda CB750K Motorcycle Parts 1975 Honda CB360T Motorcycle Parts 1975 Honda CB400F Motorcycle Parts 1975 Honda CB750F Motorcycle Parts 1975 Honda CB750K Motorcycle Parts 1976 Honda CB360T Motorcycle Parts 1976 Honda CB400F Motorcycle Parts 1976 Honda CB750F Motorcycle Parts 1976 Honda CB750K Motorcycle Parts 1977 Honda CB400F Motorcycle Parts 1977 Honda CB750F Motorcycle Parts 1977 Honda CB750K Motorcycle Parts 1978 Honda CB750F Motorcycle Parts 1978 Honda CB750K Motorcycle Parts 1979 Honda CB750F Motorcycle Parts 1979 Honda CB750K Motorcycle Parts 1979 Honda CB750L Motorcycle Parts 1980 Honda CB750C Motorcycle Parts 1980 Honda CB750F Motorcycle Parts 1980 Honda CB750K Motorcycle Parts 1980 Honda CB900C Motorcycle Parts 1981 Honda CB750C Motorcycle Parts 1981 Honda CB750F Motorcycle Parts 1981 Honda CB750K Motorcycle Parts 1981 Honda CB900C Motorcycle Parts 1981 Honda CB900F Motorcycle Parts 1982 Honda CB750C Motorcycle Parts 1982 Honda CB750F Motorcycle Parts 1982 Honda CB750K Motorcycle Parts 1982 Honda CB750SC Motorcycle Parts 1982 Honda CB900C Motorcycle Parts 1982 Honda CB900F Motorcycle Parts 1983 Honda CB1000C Motorcycle Parts 1983 Honda CB1100F Motorcycle Parts 1983 Honda CB750SC Motorcycle Parts 1984 Honda CB125S Motorcycle Parts 1985 Honda CB125S Motorcycle Parts Honda CB Fasteners, Bolts, Screws & Hardware Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB Tools, Hardware & Accessories Honda CB1000 Motorcycle Parts by Model & Year Honda CB125 Motorcycle Parts by Model & Year Honda CB125S Motorcycle Parts (1973–1985) Honda CB160 Motorcycle Parts (1966–1969) Honda CB175K Motorcycle Parts (1969–1973) Honda CB350 Motorcycle Parts by Model & Year Honda CB350K Motorcycle Parts (1968–1972) Honda CB360 Motorcycle Parts by Model & Year Honda CB360T Motorcycle Parts (1975–1976) Honda CB400 Motorcycle Parts by Model & Year Honda CB400F Motorcycle Parts (1975–1977) Honda CB750 DOHC Parts (1979–1982) Honda CB750 Motorcycle Parts by Model & Year Honda CB750 SOHC Parts (1969–1978) Honda CB750C Custom Motorcycle Parts (1980–1982) Honda CB750F Motorcycle Parts (1975–1982) Honda CB750K Motorcycle Parts (1969–1982) Honda CB750SC Nighthawk Motorcycle Parts (1982–1986) Honda CB900 Motorcycle Parts by Model & Year Honda CB900C Custom Motorcycle Parts (1980–1982) Honda CB900F Supersport Motorcycle Parts (1981–1982) Honda CB92 Motorcycle Parts (1959–1963) Series 10: CB72-CB250 (59-85) Series 3: CB700-750SC (82-86) Series 4: CB900-1100 (80-83) Series 8: CB350-CB400 (72-77) Series 9: CB350-CB360 (69-75)
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
1980 Honda CB900C Motorcycle Parts 1981 Honda CB900C Motorcycle Parts 1982 Honda CB900C Motorcycle Parts 1983 Honda CB1000C Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Rear Shock Absorbers & Mounting Parts Honda CB Suspension & Wheel Parts Honda CB1000 Motorcycle Parts by Model & Year Honda CB900 Motorcycle Parts by Model & Year Honda CB900C Custom Motorcycle Parts (1980–1982) New Items Series 4: CB900-1100 (80-83)
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.View part Honda CB900 / CB750 / CB650 / CB550 Fork Dust Seal Set Fork dust-seal pairTwo Japanese-made dust seals, separate from the fork oil-seal set.View part 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.View part

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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