VintageCB750 Supplying CB Riders Since 2010

About Us Why Us? Reviews Shipping Info Returns Contact Us
Wish Lists
0 My Cart

Your cart is currently empty.

Browse all parts
Total (USD): $0.00
View cart
Menu
Search
Wish
Cart 0
My motorcycle Choose your Honda CB model

Search parts

Searching all Honda CB parts

Example: brake pads or oil filter.

1985 Honda CB650SC Nighthawk Fork Oil & Dust Seals

Plan a fork sealing repair on your 1985 Nighthawk with separate checks for oil seals and dust seals. The oil-seal dimensions are 39 × 52 × 11mm; the dust seals come as a set of two. Compare the forks before ordering.

Close ×
Your saved bike Choose your Honda CB model

Shop By Category

Most orders ship same or next business day Fitment guarantee Listed for your exact model and year? We’ll make it right if it doesn’t fit as described. Mechanic-backed support Ask our team for help choosing the right Honda CB part.
Currently viewing Fork Tubes, Springs, Seals & Boots

Honda motorcycle parts

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

Honda CB1100F CB1000C CB900F CB650SC fork seal set

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

$23.05 USD
27-1029
1981 Honda CB900F Motorcycle Parts 1982 Honda CB900F Motorcycle Parts 1983 Honda CB1000C Motorcycle Parts 1983 Honda CB1100F Motorcycle Parts 1983 Honda CB650SC Nighthawk Motorcycle Parts 1984 Honda CB650SC Nighthawk Motorcycle Parts 1985 Honda CB650SC Nighthawk Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB1000 Motorcycle Parts by Model & Year Honda CB650 Motorcycle Parts by Model & Year Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB900 Motorcycle Parts by Model & Year Honda CB900F Supersport Motorcycle Parts (1981–1982) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82)
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...
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
1981 Honda CB900F Motorcycle Parts 1982 Honda CB900F Motorcycle Parts 1983 Honda CB1000C Motorcycle Parts 1983 Honda CB1100F Motorcycle Parts 1983 Honda CB650SC Nighthawk Motorcycle Parts 1984 Honda CB650SC Nighthawk Motorcycle Parts 1985 Honda CB650SC Nighthawk Motorcycle Parts Honda CB Fork Tubes, Springs, Seals & Boots Honda CB Suspension & Wheel Parts Honda CB1000 Motorcycle Parts by Model & Year Honda CB650 Motorcycle Parts by Model & Year Honda CB650SC Nighthawk Motorcycle Parts (1982–1985) Honda CB900 Motorcycle Parts by Model & Year Honda CB900F Supersport Motorcycle Parts (1981–1982) Series 4: CB900-1100 (80-83) Series 5: CB650 (79-82)
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...
compare

1985 Honda CB650SC Nighthawk · Fork Seals Buying guide

Match the seal dimensions and service layers

Oil seals and dust seals occupy different positions in the fork assembly. Each selected package contains two of its own seal type. Inspect both during planning, and select the required products for the forks actually fitted.

Parts to consider

1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Seal Set 39 × 52 × 11mm oil sealsTwo 39 × 52 × 11 mm fork oil seals per set, listed for CB650SC 1983–85.View part 1981-85 Honda CB1100F / CB1000C / CB900F / CB650SC Fork Dust Seal Set Pair of fork dust sealsTwo dust seals per pack for the listed late-Nighthawk application.View part

Check the assembly before buying seals

Identify the fork tubes and sliders currently fitted, especially if the motorcycle has had a front-end swap. Compare the specified oil-seal dimensions with that assembly. Inspect the sliding surfaces during diagnosis so a seal purchase does not overlook the underlying cause of leakage.

Separate pack count from repair quantity

The oil-seal set contains two seals, and the separate dust-seal set also contains two pieces. Keep the sealing positions distinct when deciding what needs renewal. Use the correct service manual for the repair procedure, fluid specification and checks of the fitted fork assembly.

Ordering questions

Can I use the same service instructions for both fork legs?

Honda’s late-CB650SC manual gives different left/right internals and fluid quantities. Follow its side-specific procedure; seal size does not determine the fluid fill.

Can these seals be selected from the Nighthawk name alone?

No. This oil-seal set is 39 × 52 × 11 mm for the listed 1983–85 CB650SC, while the separately listed 1982 CB650SC seal is 37 × 50 × 11 mm. Identify the fitted fork and full seal dimensions; the shared Nighthawk name does not make those sets interchangeable.

Should worn fork surfaces be checked before replacing the seals?

Yes. Inspect the fitted assembly as part of diagnosis and follow the service manual. New seals alone do not establish that damaged sliding surfaces or other fork components are suitable for reuse.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

Ask a fitment question
Parts categories for 1985 Honda CB650SC Nighthawk

Your cart

×