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1977 Honda CB750K Front Caliper Parts

Compare a rebuild kit, individual piston and complete replacement caliper for your 1977 Honda CB750K front brake. These later caliper listings have different contents from one another. Match the fitted caliper style and mounting before deciding which repair option covers the required components.

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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 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 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 CB750 CB550 CB500 CB450 front caliper adjuster set 45117-341-700

Honda CB750 / CB550 / CB500 / CB450 Front Caliper Adjuster Set ~ Replaces 45117-341-700

$13.95 USD
29-7016
Restore your front caliper adjuster with this Front Brake Caliper Adjuster Set, including adjusting bolt, spring, washer, and nut. Replaces OEM #45117-341-700 (bolt), #45119-300-020...
Honda CB750A CB750F CB750K front caliper rebuild kit

1975-78 Honda CB750A / CB750F / CB750K Front Caliper Rebuild Kit

$52.87 USD
14-0506
Rebuild your late-'70s CB750 front caliper with this Front Brake Caliper Rebuild Kit. Includes the brake caliper sealing ring, 2 caliper bolts with washers,...
Honda CB750 CB550 CB500 front brake caliper bleed screw 45224-579-013

Honda CB Front Brake Caliper Bleed Screw ~ Replaces 45224-579-013

$8.95 USD
73-0993
Replace your front caliper bleed screw with this Front Brake Caliper Bleed Screw, replacing OEM #45224-579-013.Key Features• Front brake caliper bleed screw• Replaces OEM...
Honda CB750A CB750F CB750K front brake caliper assembly 45100-392-003

1975-78 Honda CB750A / CB750F / CB750K Front Brake Caliper Assembly ~ Replaces Honda OEM 45100-392-003

$129.95 USD
33-0041
Aftermarket front brake caliper assembly for Honda CB750A, CB750F, and CB750K front disc brake service. This complete assembly replaces Honda OEM #45100-392-003 and is...
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,...
Honda CB750A CB750F CB750K front caliper piston 45107-392-003

1975-78 Honda CB750A / CB750F / CB750K Front Caliper Piston ~ Replaces 45107-392-003

$69.95 USD
29-0531
Replace your late SOHC CB750 front caliper piston with this Front Brake Caliper Piston, 42.8mm diameter x 34mm length, replacing OEM #45107-392-003.Key Features• Front...
Honda CB750 CB550 front brake caliper bolt and washer set 90165-323-000

Honda CB Front Brake Caliper Bolt & Washer Set ~ Replaces 90165-323-000

$12.50 USD
73-1027
Replace your front caliper bolts and washers with this Front Brake Caliper Bolt & Washer Set. Includes 2 bolts and 2 washers. Replaces OEM...
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1977 Honda CB750K · Brake Caliper Rebuild Kits, Caliper Pistons, Bleed Screws Buying guide

Compare the later caliper repair options by their contents

A seal-and-hardware kit does not supply the same components as a complete caliper. The separate piston has stated dimensions, and the assembled replacement lists a mounting check to make before ordering.

Parts to consider

1975-78 Honda CB750A / CB750F / CB750K Front Caliper Rebuild Kit Later caliper seal and hardware kitIncludes the sealing ring, two bolts with washers, bleeder and cap, plus the adjuster set.View part 1975-78 Honda CB750A / CB750F / CB750K Front Caliper Piston ~ Replaces 45107-392-003 42.8mm caliper pistonReplacement piston, reference 45107-392-003, listed at 42.8 mm diameter × 34 mm length for the stated later SOHC application.View part 1975-78 Honda CB750A / CB750F / CB750K Front Brake Caliper Assembly ~ Replaces Honda OEM 45100-392-003 Complete later front caliperAftermarket assembly with body halves, pads, piston, seal, bleeder, cap and bolts; verify 51mm mounting spacing.View part

Related parts: Separate piston seal, reference 45215-533-004 · Bleed screw, reference 45224-579-013 · Two bolts and two washers, reference 90165-323-000

Check the adjuster hardware supplied in the rebuild kit

The rebuild kit’s adjuster set includes an adjusting bolt, spring, washer and nut. Compare those four components with the fitted adjuster before adding separate hardware to the same order.

Match an assembled replacement to the installed brake

The complete caliper replaces 45100-392-003 and specifies a later single-disc style with 51 mm mounting spacing. That mounting check and the separate piston’s diameter and length describe different interfaces; compare the fitted assembly rather than relying on only one measurement.

Questions before you order

Can a seal-only repair avoid the full rebuild kit?

The piston sealing ring is sold separately as reference 45215-533-004. The larger kit adds caliper bolts and washers, bleed screw and cap, plus the adjuster set. Choose the package after identifying which retained pieces need replacement.

Does the kit’s 1976 CB750F serial restriction also limit the 1977 CB750K?

The kit separately lists the 1977–78 CB750K without that serial restriction. The CB750F-2000003 to CB750F-2022317 range is attached to the 1976 F application. Use the line for the actual model, and identify any substituted caliper before choosing the kit.

Which separate purchases should I recheck when choosing the complete caliper?

Its contents already include pads, piston, piston seal, both body halves, bleed screw, cap and bolts. Compare those against individual items in your order. The complete assembly does not itemize the adjuster set that appears in the rebuild-kit description, so confirm any needed adjuster hardware separately.

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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