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1979 Honda CB400TII Hawk II Front-Caliper Service Parts

Front-caliper work can call for a piston, sliding-shaft boots or a damaged bleed screw, depending on what inspection finds. These 1979 Hawk II selections cover those separate jobs, with each component matched to the original front-caliper application.

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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 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 caliper piston sealing ring 45108-300-003

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

$7.95 USD
29-0527
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
29-7018
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
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 CB750C CB650C CB400 brake caliper piston 45107-413-003

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

$69.95 USD
99-5101
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
73-0835
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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1979 Honda CB400TII Hawk II · Front-Caliper Service Parts Buying guide

Choose individual parts after opening the caliper

Compare the piston, shaft boots and bleed fitting with the fitted caliper. Order from the inspection findings and establish the complete sealing-parts requirement before beginning reassembly.

Parts to consider

1978-81 Honda CB750C / CB650C / CB400 Brake Caliper Piston ~ Replaces 45107-413-003 Japanese-made caliper pistonReplacement piston referencing 45107-413-003; explicit fitment includes the 1979 Hawk II.View part 1978-79 Honda CB750 / CB650 / CB400 Front Caliper Shaft Boots Pk/4 ~ Replaces 45133-413-003 Caliper shaft boots, four-packPack of four rubber shaft boots replacing reference 45133-413-003.View part Honda CB750 / CB650 / CB450 / CB400 Front Caliper Bleed Screw ~ Replaces 45224-413-003 Front-caliper bleed screwReplacement bleed screw referencing 45224-413-003 for the original CB400TII front caliper.View part

Select the piston by its application

The Japanese-made replacement piston references 45107-413-003 and includes the 1979 Hawk II. Have the piston and cylinder inspected together. Confirm the required hydraulic seals for the exact caliper as a separate part of the repair plan before purchasing all the rebuild components.

Address damaged external service parts

The shaft-boot package supplies four rubber boots under reference 45133-413-003. A separate bleed screw references 45224-413-003. Match the parts at their actual locations, and use Honda’s hydraulic-brake instructions for the service work, fluid handling and final system checks.

Ordering questions

Is the featured piston sold as genuine Honda?

The current product description identifies a Japanese-made replacement referencing 45107-413-003. Treat it as that replacement unless original Honda packaging and manufacturer identity are separately confirmed before purchase.

How many shaft boots are in the package?

Four rubber shaft boots are supplied. That package count identifies what you receive; check the caliper layout and the condition of the fitted boots before planning the repair.

How should I choose the bleed screw on a changed caliper?

Match the replacement caliper’s bleed fitting and reference, rather than the bike’s year alone. The featured screw references 45224-413-003 for the original CB400TII front-caliper application.

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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