1978 Honda CB400TII Front Caliper Parts

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Honda CB900 CB750 CB650 caliper piston sealing ring 45108-300-003

Honda CB Caliper Piston Sealing Ring ~ Replaces 45108-300-003

$7.95 USD

Replace your front caliper piston sealing ring with this Front Brake Caliper Piston Sealing Ring, replacing OEM #45108-300-003. Also fits the rear brake caliper...

Honda CB750 CB550 front brake caliper bleed screw rubber cap 45110-300-003

Honda CB Front Brake Caliper Bleed Screw Rubber Cap (Stock Type) ~ Replaces 45110-300-003

$3.95 USD

Replace your front caliper bleed screw rubber cap with this Stock Type Front Brake Caliper Bleed Screw Rubber Cap, the same design as the...

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...

1978-81 Honda CB750C / CB650C / CB400 Brake Caliper Piston ~ Replaces 45107-413-003

$69.95 USD

Upgrade or restore your classic Honda motorcycle braking system with this high‑quality Brake Caliper Piston — precision engineered and Japanese made for reliable performance....

Honda CB750 CB650 CB400 front caliper shaft boots pk 4 45133-413-003

1978-79 Honda CB750 / CB650 / CB400 Front Caliper Shaft Boots Pk/4 ~ Replaces 45133-413-003

$19.95 USD

Replace your front caliper shaft boots with these Front Brake Caliper Shaft Boots Pk/4. These rubber covers attach to the front brake caliper. Replaces...

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1978 Honda CB400TII Hawk II · Front Caliper Parts Buying guide

Inspect the caliper before selecting replacement pieces

The piston, bleed screw and shaft boots address different parts of the front caliper. Confirm the original caliper type and inspect its bore, seal areas and moving parts before ordering.

Parts to consider

Front caliper pistonJapanese-made replacement piston corresponding to reference 45107-413-003 and listed for the 1978 Hawk II front caliper.View part

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

Front caliper bleed screwReplacement front-caliper bleed screw corresponding to reference 45224-413-003 for the listed Hawk II caliper.View part

1978-79 Honda CB750 / CB650 / CB400 Front Caliper Shaft Boots Pk/4 ~ Replaces 45133-413-003

Caliper-shaft boots, pack of fourFour rubber caliper-shaft boots replacing reference 45133-413-003 for the CB400TII front brake.View part

Related parts: Stock-type bleed-screw cap

A piston needs a sound caliper

Inspect the piston surface and caliper bore rather than deciding from the exposed end alone. Damaged hydraulic parts need proper assessment, and new components must match the fitted caliper. Use Honda’s service procedure or a qualified brake specialist to complete the rebuild.

Separate protective and hydraulic parts

Shaft boots protect the caliper’s moving support areas, while the bleed screw is part of hydraulic servicing. Order the pieces required by inspection and account for the four-boot pack. After assembly, the brake needs the manual-specified bleeding and functional checks before riding.

Common questions

Will these parts fit a changed front caliper?

Confirm the replacement caliper’s identity, piston and screw specifications independently. The Hawk II application is useful for the original caliper, but it does not establish compatibility with a later front-end conversion.

How many shaft boots come in one pack?

The featured pack contains four caliper-shaft boots. Compare the fitted caliper and count the boots being renewed before ordering additional packs or treating the quantity as a separate boot per purchase.

Is the replacement piston sold as genuine Honda?

The current product description identifies a Japanese-made replacement using Honda reference 45107-413-003. Choose it on that stated basis; a reference number is not itself a claim of Honda manufacture.

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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