1980 Honda CB650C Fork Seals & Retainers

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Honda CB750 / CB650 / CB550 / CB500 Fork Seals

$19.95 USD

Replace your fork seals with this Fork Seal Set, 35 x 48 x 10.5 / 11mm. High quality, made in Japan. Key Features• Fork...

Honda CB750 CB650 CB550 CB500 fork seal stopper metal rings (pk 2) 51447-KL4-951

Honda CB750 / CB650 / CB550 / CB500 Fork Seal Stopper Metal Rings (Pk/2) ~ Replaces 51447-KL4-951

$7.95 USD

Replace your fork seal stopper metal rings with this Fork Seal Stopper Metal Ring Pk/2, replacing OEM #51447-KL4-951. This is the metal ring above...

Honda CB750 / CB650 / SL350K2 Fork Dust Seal Set

$24.95 USD

Replace your DOHC CB750 or CB650 fork dust seals with this Fork Dust Seal Set of 2. OEM-quality parts made in Japan.Key Features• Fork...

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Universal motorcycle headlight reflector rubber base 33743-425-600

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

$16.95 USD

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...

New

Honda CB750 CB650 headlight stay headlight reflector bolt 90120-425-000

1979-83 Honda CB750 / CB650 Headlight Stay / Headlight Reflector Bolt ~ Replaces 90120-425-000

$8.95 USD

Replacement headlight stay bolt for restoring your CB750's headlight assembly back to proper condition. This is the bolt that fastens through the headlight ears,...

Honda CB900 CB750 CB650 CB550 front fork oil lock piece 51432-371-003

Honda CB900 / CB750 / CB650 / CB550 Front Fork Oil Lock Piece ~ Genuine Honda 51432-371-003

$29.95 USD

This genuine Honda front fork oil lock piece fits inside the front fork assembly on the Honda CB models listed below. It works with...

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1980 Honda CB650C Custom · Fork Seals & Retainers Buying guide

Separate the oil seal, dust seal and retaining ring

The oil seal dimensions, outer dust seal and metal ring above the seal are distinct ordering checks. The selected products have specific CB650C application, with a 1980-only Custom listing for the retaining rings.

Parts to consider

Fork oil seal setTwo Japanese-made fork oil seals measuring 35 × 48 × 10.5 / 11 mm, enough for both fork legs on one compatible motorcycle; listed for the 1980 CB650C.View part

Fork dust seal pairTwo Japanese-made fork dust seals, listed for the 1980–81 CB650C Custom.View part

Honda CB750 / CB650 / CB550 / CB500 Fork Seal Stopper Metal Rings (Pk/2) ~ Replaces 51447-KL4-951

Fork seal retaining ringsPack of two metal rings fitted above the fork seals, referencing 51447-KL4-951.View part

Build the order around the sealing stack

The oil seal set and dust seal pair are separate products. The metal retaining rings are another two-piece pack, positioned above the fork seals. Check the existing components and the correct fork diagram before deciding which parts to renew together.

Identify a changed front end first

A replacement fork assembly can change seal requirements despite the frame model remaining the same. Measure and identify the actual forks before choosing this seal set. Use the correct service manual for oil specification, assembly sequence and other fork service settings.

Buying questions

What size are the featured oil seals?

The set supplies two fork oil seals measuring 35 × 48 × 10.5 / 11 mm, enough for both fork legs on one compatible motorcycle, and lists the 1980 CB650C. Check the installed fork assembly if the front end has been swapped.

What can prevent a new stopper ring from retaining the seal correctly?

Corrosion, distortion or debris in the retaining groove can prevent full seating. The stopper-ring guidance calls for cleaning and inspecting the groove and ring, then confirming that each ring snaps completely into place. New rubber seals do not resolve damaged retaining hardware.

Do the retaining rings fit the 1981 Custom too?

This retaining-ring application explicitly lists the 1980 CB650C Custom. Do not extend that year range from the broader oil seal or dust seal listings; verify the later fork arrangement separately.

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