1981 Honda CB750K Front Brake Caliper Repair

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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

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

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,...

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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

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

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

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

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•...

1980-81 Honda CB750K Front Caliper Rebuild Kit

$29.95 USD

Rebuild your 1980-81 CB750K front caliper with this Front Brake Caliper Rebuild Kit. Includes the brake caliper piston sealing ring, bleed screw, and piston...

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1981 Honda CB750K · Brake Caliper Rebuild Kits, Caliper Pistons, Bleed Screws Buying guide

Choose the three-piece 1980–81 caliper kit and any separate hard parts

Kit 14-0508 specifically lists the 1980–81 CB750K and contains a piston sealing ring, bleed screw and piston boot. The piston and shaft boot have separate listings. Identify the caliper fitted to your 1981 bike before combining the kit with individual parts.

Parts to consider

1980-81 Honda CB750K Front Caliper Rebuild Kit

Front caliper seal, boot and bleed screw kitContains the listed piston sealing ring, bleed screw and piston boot. The description does not list a replacement piston or shaft boot in this kit.View part

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

Replacement front caliper pistonThe piston listing gives 42.8mm diameter and 36.5mm length, with Honda reference 45107-425-003. Compare with the removed piston before ordering.View part

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

Separate front caliper shaft bootAn individually supplied shaft boot listed against Honda reference 45133-425-003. Keep it distinct from the piston boot named in the rebuild kit.View part

Make a kit-versus-individual-parts list

Kit 14-0508 already names the sealing ring, bleed screw and piston boot. The related individual listings offer those component types separately. Use the kit contents to avoid ordering duplicates, then consider the replacement piston or shaft boot if the inspected repair also calls for them.

Identify rubber parts by location and reference

The piston boot replaces 45109-425-003; the shaft boot replaces 45133-425-003 and is sold each. The piston sealing ring is a third item, replacing 45215-533-004. Keep those names and references with the removed parts so “caliper rubber” does not become an ambiguous order.

Common questions

Can I use a 1979 CB750K kit listing for this 1981 repair?

Use the kit that explicitly lists your application: 14-0508 identifies the 1980–81 CB750K. Some individual parts on this page cover a wider year range, but that does not extend the fitment of a different complete kit. Compare the actual caliper if it has been replaced.

Do the piston dimensions alone prove that it fits?

The listed 42.8mm diameter and 36.5mm length are useful comparison points, alongside reference 45107-425-003 and the 1979–81 CB750K application. They do not identify an unknown replacement caliper by themselves. Resolve any mismatch in the installed assembly before ordering.

Does the shaft-boot listing supply every boot for the caliper?

It is sold each, and the description does not give a complete-caliper package quantity. Count the shaft boots required by the inspected assembly. The piston boot is a different product and is named separately in kit 14-0508.

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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