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1980 Honda CB750K Front Caliper Kits, Pistons & Boots

The 1980 CB750K caliper kit contains three named repair components, with the piston and shaft boot offered separately. Compare those contents with the caliper parts removed during inspection. A piston boot, piston sealing ring and shaft boot are different items in this range.

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

Honda motorcycle parts

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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
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,...
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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
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•...
Honda CB750K front caliper rebuild kit

1980-81 Honda CB750K Front Caliper Rebuild Kit

$29.95 USD
14-0508
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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1980 Honda CB750K · Brake Caliper Rebuild Kits, Caliper Pistons, Bleed Screws Buying guide

Match each seal and boot to the caliper component

The featured kit combines a piston sealing ring, bleed screw and piston boot. The separate piston has a stated diameter and length, while the shaft boot has its own replacement reference and individual quantity.

Parts to consider

1980-81 Honda CB750K Front Caliper Rebuild Kit Three-part front caliper kitListed for the 1980–81 CB750K: piston sealing ring, bleed screw and piston boot. Check other required components separately.View part 1979-81 Honda CB750 / CB650 Front Caliper Piston ~ Replaces 45107-425-003 Front caliper pistonSeparate piston listed at 42.8 mm diameter and 36.5 mm length, replacing reference 45107-425-003.View part 1979-81 Honda CB750 / CB650 Front Caliper Piston Boot ~ Replaces 45109-425-003 Piston rubber dust bootSeparate piston boot replacing reference 45109-425-003. This is the piston dust boot, distinct from the shaft boot.View part

Related parts: Piston sealing ring · Individual caliper shaft boot · Front caliper bleed screw

The rebuild-kit label does not establish piston condition

The kit lists a piston sealing ring, bleed screw and piston boot. It does not list a piston among those contents. Compare the separate piston’s 42.8 mm diameter and 36.5 mm length with the fitted component, and have the caliper assembly assessed before deciding which parts to reuse.

Avoid duplicating the piston boot or choosing the wrong boot

The piston boot is already named in the featured kit and is also available separately. The shaft boot is another listing, replacing 45133-425-003 and sold individually. Use the part’s actual location and reference to identify it; the two boot names do not describe the same component.

Common questions

Which parts are named in the caliper kit?

The listing names the piston sealing ring, bleed screw and piston boot. It identifies the 1980–81 CB750K application. Compare that short contents list with the work planned instead of assuming every caliper component is supplied.

What is the size of the replacement piston?

The description states 42.8 mm diameter by 36.5 mm length, with reference 45107-425-003. Compare both measurements and the fitted caliper. Those specifications do not identify a piston for an unknown substituted caliper.

Is the shaft boot included in the kit?

A shaft boot is not named among the kit’s three contents. It has a separate listing and reference 45133-425-003. Identify it separately from the piston boot if that rubber part also needs replacement.

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