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1980 Honda CB650C Custom Front Caliper Rebuild Parts

For the 1980 CB650C front caliper, compare the piston, hydraulic sealing ring and external dust boot separately. The listed piston measures 42.8mm across and 36.5mm long. Verify the fitted caliper before ordering, particularly if an earlier owner changed the front brake.

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Currently viewing Brake Caliper Rebuild Kits, Caliper Pistons, Bleed Screws

Honda motorcycle parts

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

Honda CB900 CB750 CB650 front caliper piston sealing ring 45215-533-004

Honda CB900 / CB750 / CB650 Front Caliper Piston Sealing Ring ~ Replaces 45215-533-004

$5.80 USD
29-0529
Replace your front caliper piston sealing ring with this Front Brake Caliper Piston Sealing Ring, replacing OEM #45215-533-004.Key Features• Front brake caliper piston sealing...
Honda CB1100 CB1000 caliper bleed cap (pk 10) 45108-425-003

Honda CB Caliper Bleed Screw Rubber Cap (Pk/10) ~ Replaces 45108-425-003

$11.95 USD
29-0500
Stock up on caliper bleed screw rubber caps with this Brake Caliper Bleed Screw Rubber Cap 10-pack. Universal type for series 1, 3, 4,...
New
Honda CB750 CB650 CB400 front brake caliper shaft boot 45133-425-003

Honda CB750 / CB650 / CB400 Front Brake Caliper Shaft Boot ~ Replaces 45133-425-003

$4.95 USD
99-4951
Upgrade or restore your classic Honda motorcycle’s front brake system with this Front Brake Caliper Shaft Boot — a quality replacement designed to help...
Honda CB750 CB650 CB450 CB400 front caliper bleed screw 45224-413-003

Honda CB750 / CB650 / CB450 / CB400 Front Caliper Bleed Screw ~ Replaces 45224-413-003

$8.95 USD
73-0995
Replace your front caliper bleed screw with this Front Brake Caliper Bleed Screw, replacing OEM #45224-413-003.Key Features• Front brake caliper bleed screw• Replaces OEM...
Honda CB750 CB650 front caliper piston boot 45109-425-003

1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003

$15.95 USD
73-1041
Replace your front caliper piston dust boot with this Front Brake Caliper Piston Rubber Dust Boot, replacing OEM #45109-425-003.Key Features• Front brake caliper piston...
Honda CB750 CB650 front caliper piston 45107-425-003

1979-81 Honda CB750 / CB650 Front Caliper Piston ~ Replaces 45107-425-003

$59.95 USD
29-0532
Replace your DOHC CB750 or CB650 front caliper piston with this Front Brake Caliper Piston, 42.8mm diameter x 36.5mm length, replacing OEM #45107-425-003.Key Features•...
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1980 Honda CB650C Custom · Front Caliper Rebuild Parts Buying guide

Inspect the piston and both sealing functions

The hydraulic ring and rubber dust boot perform different jobs around the piston. They are separate listed products, so a piston order should be checked against the sealing parts required by the actual rebuild.

Parts to consider

1979-81 Honda CB750 / CB650 Front Caliper Piston ~ Replaces 45107-425-003 Front caliper piston42.8mm-diameter, 36.5mm-long piston for the listed 1980 CB650C front caliper.View part Honda CB900 / CB750 / CB650 Front Caliper Piston Sealing Ring ~ Replaces 45215-533-004 Caliper piston sealing ringSeparate front-caliper hydraulic sealing ring replacing reference 45215-533-004.View part 1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003 Caliper piston dust bootSeparate rubber dust boot for the 1980 CB650C front piston; reference 45109-425-003.View part

Do not use model year as the only check

The selected piston and seals have explicit 1980 CB650C applications. Replacement calipers can change those requirements. Compare the old parts, references and dimensions as a group before committing to a rebuild order.

Assess the complete caliper condition

A replacement piston does not establish that the caliper body is serviceable. Have corrosion, seal grooves and related hardware assessed, then follow the appropriate service procedure. The bleed screw and small rubber bleed cap are separate from the piston dust boot.

Front Caliper Rebuild Parts questions

Is the sealing ring the same as the dust boot?

No. The sealing ring is the hydraulic seal, while the dust boot is a separate rubber component. Match both to the fitted caliper and the parts being renewed.

Does a new piston include the seals?

The piston, sealing ring and dust boot are presented as separate products. Plan the rebuild around those separate entries rather than assuming the piston is a complete caliper kit.

Can I use the 1981 Custom piston without checking?

Use the actual caliper specification. The selected piston explicitly lists the 1980 Custom, so do not extend that claim to another year or a changed caliper without verification.

Not sure which part you need?

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

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