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1975 Honda CB500T Master Cylinder and Rebuild Parts

Reseal the Honda front master, replace the cap or the hose-joint boot, or fit a complete assembly. The Japan kit is for the Honda cylinder named for this CB500T. The 13mm assemblies are for a single disc, and their included pieces differ.

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Currently viewing Master Cylinder & Rebuild Parts

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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 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...
Honda CB750 CB550 CB500 CB400 CB350 master cylinder damper set

Honda CB Master Cylinder Damper Set

$6.95 USD
73-0841
Replace your master cylinder damper with this Master Cylinder Damper Set. Includes brake master cylinder rubber damper, plate, and washer. This set is often...
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 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,...
Sold out
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...
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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1975 Honda CB500T · Master Cylinder & Rebuild Parts Buying guide

Match the bore, the cap, and the boot

The rebuild kit replaces OEM 45530-377-305 and is made in Japan. The boot sits where the hose joins the master. The cap under OEM 45513-341-771 includes a plastic O-ring. Two 13mm assemblies differ in what they bring.

Parts to consider

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-377-305 Front master rebuild kitA front master rebuild kit, made in Japan, replacing 45530-377-305, for the 1975-76 CB500T and other early Hondas. It does not include the cap, boot, diaphragm, or damper. Add the piece you can see is worn.View part Honda CB Master Cylinder Rubber Boot ~ Replaces 45522-300-010 Master cylinder rubber bootThe rubber boot that attaches where the brake hose joins the master cylinder, replacing OEM 45522-300-010. The 1975-76 CB500T is named. This is the hose-joint boot, not the reservoir cap.View part Honda CB Master Cylinder Reservoir Cap ~ Replaces 45513-341-771 Reservoir cap with O-ringA master-cylinder cap with a plastic O-ring, replacing OEM 45513-341-771. It reproduces a style Honda discontinued. The 1975-76 CB500T is named. Another cap replaces OEM 43513-MJ6-006, so match your cap number.View part

Related parts: Honda-type 13mm master · Magura 13mm master · Master cylinder damper set

Three lid parts, three numbers

The cap under OEM 45513-341-771 is the lid and includes a plastic O-ring. A separate plastic O-ring replaces OEM 45521-MJ6-006, a different number, so do not assume it is the ring packed with that cap. A reservoir diaphragm is OEM 45520-300-000. The boot is the hose-joint piece, not the diaphragm.

13mm is not the only bore

Assemblies titled 14mm and 5/8 in. are different bores from the two 13mm units. A spare brake lever is for the Honda-type assembly, so do not treat the silver black-tip lever as that spare. The Japan kit names the Honda CB500T master and is not described as a kit for the Magura.

Reseal the Honda master, or fit a new bore?

How do I tell the boot from the reservoir cap?

The boot, OEM 45522-300-010, attaches where the brake hose joins the master cylinder. The cap, OEM 45513-341-771, is the reservoir lid and includes a plastic O-ring. A diaphragm under OEM 45520-300-000 is a third piece. Match the part to the spot that failed.

Which 13mm master includes the brake-light switch?

The Honda-type 13mm assembly includes the lever, banjo bolt, washers, and brake-light switch, plus a right-hand threaded mirror mount. The Magura 13mm has a threaded port for a switch, a 12mm stroke, and no mirror mount. Its switch, banjo bolt, and washer are separate.

The lever buzzes. Do I need a new master?

Check the damper first. That set is a rubber damper, a plate, and a washer, and it is often already missing. It only cuts vibration at the lever. Rebuild the Honda master when the cylinder itself is leaking or worn.

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