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1969 Honda CB750K Master Cylinders & Rebuild Parts

Compare complete front master cylinders with rebuild kits, reservoir diaphragms, caps and protective boots for the 1969 Honda CB750K. Several replacement designs appear here, so identify your fitted cylinder and read the piston-size details instead of choosing on appearance alone.

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1969 Honda CB750K

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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 Master Cylinder & Rebuild Parts

Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB750 CB550 CB400F front master cylinder kit 45530-377-305

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-377-305

$37.95 USD
08-0215
Rebuild your early SOHC CB's front master cylinder with this Front Brake Master Cylinder Rebuild Kit, replacing OEM #45530-377-305. Made in Japan. Fits the...
Honda CB750 CB550 CB500 master cylinder rubber boot 45522-300-010

Honda CB Master Cylinder Rubber Boot ~ Replaces 45522-300-010

$9.95 USD
33-0003
Replace your master cylinder rubber boot with this Master Cylinder Rubber Boot, which attaches where the brake hose joins the master cylinder. Replaces OEM...
New
Honda CB750 CB550 CB400F front master cylinder assembly 5 8 in.

Honda CB Front Master Cylinder Assembly ~ 5/8 in.

$99.95 USD
08-0253
Drop in a factory-look master cylinder with a performance piston size using this Front Brake Master Cylinder Assembly. Black body with silver lever, custom-manufactured...
Honda CB750K rear brake light switch spring 35357-300-000

1969-76 Honda CB750K Rear Brake Light Switch Spring ~ Replaces 35357-300-000

$5.95 USD
29-7009
Replace your rear brake stop switch spring with this Rear Brake Light Stop Switch Spring, replacing OEM #35357-300-000.Key Features• Rear brake light stop switch...
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Honda CB900 CB750 CB650 front master cylinder assembly

Honda CB900 / CB750 / CB650 Front Master Cylinder Assembly

$109.95 USD
08-0457
Fit a blacked-out front master cylinder to your late-'70s or early-'80s DOHC CB with this Front Brake Master Cylinder Assembly. Usable on any single...
Honda CB750 CB550 CB400F master cylinder diaphragm 45520-300-000

Honda CB Master Cylinder Reservoir Diaphragm ~ Replaces 45520-300-000

$10.95 USD
08-0282
Replace a hardened or torn master cylinder diaphragm with this Master Cylinder Reservoir Diaphragm, replacing OEM #45520-300-000. Exceptional range of applications, fits FRONT master...
New
Honda CB750 CB550 CB400F front master cylinder assembly 14mm

Honda CB Front Master Cylinder Assembly ~ 14mm

$99.95 USD
08-0269
Restore strong and consistent braking performance with this Front Brake Master Cylinder Assembly, designed as a high-quality replacement for many classic Honda models. This...
Honda CB750K rear brake light switch bracket 50156-300-020

1969-76 Honda CB750K Rear Brake Light Switch Bracket ~ Replaces 50156-300-020

$13.95 USD
73-0887
Replace your rear brake stop switch bracket with this Rear Brake Light Stop Switch Bracket, replacing OEM #50156-300-020.Key Features• Rear brake light stop switch...
Honda CB1000 CB900 master cylinder reservoir cap plastic o-ring 45521-MJ6-006

Honda CB Master Cylinder Reservoir Cap Plastic O-Ring ~ Replaces 45521-MJ6-006

$4.95 USD
29-0062
Replace your master cylinder cap O-ring with this Master Cylinder Reservoir Cap Plastic O-Ring, replacing OEM #45521-MJ6-006.Key Features• Master cylinder reservoir cap O-ring• Plastic•...
Honda CB1100 CB1000 CB900 master cylinder reservoir cap 45513-341-771

Honda CB Master Cylinder Reservoir Cap ~ Replaces 45513-341-771

$39.95 USD
29-0054
Restore your master cylinder cap with this Master Cylinder Cap with Plastic O-Ring, replacing OEM #45513-341-771. This original style was discontinued long ago by...
Universal Honda-type front master cylinder assembly 13mm

Universal Honda-Type Front Master Cylinder Assembly ~ 13mm

$84.95 USD
08-0262
Upgrade to a universal front master cylinder assembly with this Honda-type unit. Complete with lever, banjo bolt, banjo bolt washers, and brake light switch,...
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Honda CB750 CB650 CB550 replacement brake lever for master cylinder

Honda CB Replacement Brake Lever for Master Cylinder 08-0262

$9.95 USD
08-0430
Replace the brake lever on the #08-0262 Master Cylinder Assembly specifically with this Brake Lever. Designed for this particular master cylinder.Key Features• Replacement brake...
Honda CB1100 CB1000 CB900 master cylinder reservoir cap 43513-MJ6-006

Honda CB Master Cylinder Reservoir Cap ~ Replaces 43513-MJ6-006

$23.45 USD
29-0080
Replace your master cylinder reservoir cap with this Master Cylinder Reservoir Cap with Diaphragm, round OEM thread-on type. Cap replaces OEM #43513-MJ6-006, diaphragm replaces...
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Honda CB750 replacement brake lever for master cylinder 08-0253

Replacement Brake Lever for Master Cylinder 08-0253

$9.95 USD
08-0029
Replace the brake lever on the #08-0253 Master Cylinder Assembly specifically with this Brake Lever. Designed for this particular master cylinder, not stock brake...
Magura universal front master cylinder assembly 13mm

Magura Universal Front Master Cylinder Assembly ~ 13mm

$259.00 USD
08-0250
Build a custom front brake setup with this Magura Universal Front Brake Master Cylinder. Features a 13mm piston diameter, 12mm stroke, and a threaded...
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1969 Honda CB750K · Master Cylinder Parts Buying guide

Identify the cylinder before choosing its service parts

A complete master cylinder and an internal rebuild kit are different purchases. Identify the fitted cylinder, then match its reservoir diaphragm, protective boot and cap separately by the relevant replacement references.

Parts to compare

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-377-305 Master cylinder rebuild kitJapanese-made front master cylinder kit listing the 1969–76 CB750K application.View part Honda CB Master Cylinder Reservoir Diaphragm ~ Replaces 45520-300-000 Reservoir diaphragmSeparate diaphragm for the front master cylinder on the listed early CB750K models.View part Honda CB Master Cylinder Rubber Boot ~ Replaces 45522-300-010 Master cylinder protective bootReplacement boot, reference 45522-300-010; match it to the master cylinder being serviced.View part

Related parts: 14mm replacement master cylinder · Reservoir cap · Cap O-ring

Read the complete cylinder specification separately

Replacement cylinders in this category have different stated piston sizes and appearances. A similar-looking body does not establish an identical specification. Read the individual cylinder description and compare the brake system and switch arrangement before deciding whether it suits your motorcycle.

Identify the smaller parts by their references

The diaphragm replaces 45520-300-000 and the protective boot replaces 45522-300-010. They are separate service items. The reproduction cap replaces 45513-341-771 and includes a plastic O-ring. Compare those references with the fitted cylinder before adding small parts.

Useful questions before ordering

Does every master cylinder here use the same piston size?

No. Complete replacement listings state different piston sizes, including a 14mm option and a 5/8-inch option. Compare the specific product with the brake arrangement fitted to your bike rather than assuming all cylinders have identical specifications.

Should I add the plastic O-ring when buying a reservoir cap?

The reproduction reservoir cap already includes its plastic O-ring. The separate O-ring is useful when retaining the existing compatible cap; do not add another automatically when buying the cap assembly.

Should I choose a rebuild kit by model year alone?

Use the year as a starting point, then identify the actual fitted master cylinder. Older motorcycles may carry replacement assemblies. The rebuild kit application and the cylinder design must agree before you select internal service parts.

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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