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1985 Honda CB700SC Brake & Clutch Hydraulics

The 1985 CB700SC brake master, clutch master and clutch slave need their own repair parts. Start by locating the affected cylinder. Then compare the rebuild kit with the wear found, including any damaged piston, operating pushrod or reservoir diaphragm that needs a separate item.

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Currently viewing Master Cylinder & Rebuild Parts

Honda motorcycle parts

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

Honda CB750F CB750C CB700SC front master cylinder kit 45530-MA5-671

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-MA5-671

$24.95 USD
08-0209
Refresh your DOHC CB's front master cylinder with this Front Master Cylinder Rebuild Kit, replacing OEM #45530-MA5-671. Fits the 1981-82 CB750F/C, CB750SC/CB700SC Nighthawk, CB900F/CB900C,...
Honda CB1100 CB1000 CB900 master cylinder rubber boot 45522-422-000

Honda CB Master Cylinder Rubber Boot ~ Replaces 45522-422-000

$8.95 USD
73-0094
Replace your master cylinder rubber boot with this Master Cylinder Rubber Boot, replacing OEM #45522-422-000.Key Features• Master cylinder rubber boot• Replaces OEM #45522-422-000• Honda...
Honda CB750 CB700SC CB650 master cylinder diaphragm 45520-MA5-671

Honda CB Front Master Cylinder Reservoir Diaphragm ~ Replaces 45520-MA5-671

$11.50 USD
08-0284
Replace the diaphragm on your later DOHC CB's front master cylinder reservoir with this Front Master Cylinder Reservoir Diaphragm, replacing OEM #45520-MA5-671 / #45520-MA5-672...
Honda CB750SC CB700SC CB650SC clutch master cylinder kit 22886-MB0-305

Honda Clutch Master Cylinder Rebuild Kit ~ Replaces 22886-MB0-305

$29.95 USD
08-0207
Rebuild your Nighthawk's clutch master cylinder with this Clutch Master Cylinder Rebuild Kit, replacing OEM #22886-MB0-305. Fits the mid-'80s CB750SC and CB700SC Nighthawks, CB1000...
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Honda CB700SC CB650SC CB550SC clutch slave cylinder rebuild kit 22865-MB0-003

1983-86 Honda CB700SC/CB650SC/CB550SC Clutch Slave Cylinder Rebuild Kit ~ Replaces 22865-MB0-003

$27.03 USD
08-0310
Rebuild your Nighthawk's clutch slave cylinder with this Clutch Slave Cylinder Rebuild Kit. Complete with oil seal (OEM #91209-MB0-003), spring (OEM #22864-MB0-903), piston cup...
Magura universal front master cylinder assembly 16mm

Magura Universal Front Master Cylinder Assembly ~ 16mm

$259.00 USD
08-0251
Step up to dual-disk compatibility with this Magura Universal Front Brake Master Cylinder, featuring a 16mm piston diameter recommended for dual-disk brake systems. Threaded...
Honda CB700SC CB650SC CB550SC clutch slave cylinder piston 22863-MB0-003

1983-86 Honda CB700SC / CB650SC / CB550SC Clutch Slave Cylinder Piston ~ Replaces 22863-MB0-003

$36.95 USD
29-0501
Replace your Nighthawk clutch slave cylinder piston with this Clutch Slave Cylinder Piston, replacing OEM #22863-MB0-003.Key Features• Clutch slave cylinder piston• Replaces OEM #22863-MB0-003•...
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Honda CB700SC CB650SC master cylinder cover diaphragm screws 45513-KE5-026

Honda Nighthawk Master Cylinder Cover with Diaphragm & Screws

$27.95 USD
08-0290
Restore your Nighthawk's master cylinder top with this Master Cylinder Cover with Diaphragm and Screws. A complete assembly replacing OEM #45513-KE5-026 (cover), #45520-MA5-672 (diaphragm),...
Honda CB750SC CB700SC CB650SC clutch master cylinder pushrod kit 22884-MB0-006

Honda Nighthawk Clutch Master Cylinder Pushrod Kit

$13.95 USD
08-0301
Rebuild your Nighthawk's clutch master cylinder pushrod with this Clutch Master Cylinder Pushrod Kit. Includes the pushrod (OEM #22884-MB0-006) and bushing (OEM #22885-MB0-006), two...
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1985 Honda CB700SC · Brake & Clutch Hydraulics Buying guide

Choose hydraulic repairs by cylinder and location

The 1985 CB700SC has a front brake master cylinder, a separate clutch master at the left lever and a clutch slave behind the left crankcase rear cover. Identify the leaking or sticking assembly before selecting its kit; the cylinders use different internal dimensions and parts.

Parts to consider

Honda Clutch Master Cylinder Rebuild Kit ~ Replaces 22886-MB0-305 Clutch master-cylinder rebuild kitHydraulic clutch master-cylinder kit replacing reference 22886-MB0-305.View part 1983-86 Honda CB700SC/CB650SC/CB550SC Clutch Slave Cylinder Rebuild Kit ~ Replaces 22865-MB0-003 Clutch slave-cylinder rebuild kitIncludes an oil seal, spring, piston cup and bleeder-bolt cap.View part Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-MA5-671 Front master-cylinder rebuild kitBrake master-cylinder kit replacing reference 45530-MA5-671 for the CB700SC.View part

Related parts: Clutch slave-cylinder piston · Clutch master pushrod kit · Front brake reservoir diaphragm

Find the clutch leak before choosing the kit

The clutch slave kit contains the oil seal, spring, piston cup and bleeder cap. Its metal piston is sold separately as one piston per purchase. The master-cylinder pushrod kit supplies a pushrod and bushing, not the internal hydraulic seals. A soft or dragging clutch also needs checks for air, low fluid and sticking parts.

A reservoir repair is a separate decision

The front brake reservoir diaphragm sits under the cover; it is not the master-cylinder piston seal. The category also contains a cover, diaphragm and screw set, plus a separate external rubber boot. Inspect the leak location before buying a top-cover or dust-boot part to solve an internal hydraulic fault.

Buying questions

Will a new reservoir diaphragm cure leakage at the lever end?

It addresses the reservoir cover area, not the internal piston seals or external actuating-end boot. Locate the leak and inspect the bore and piston before choosing a diaphragm, boot or master-cylinder rebuild kit.

Does the clutch slave kit include its metal piston?

No metal piston is listed among its four components: oil seal, spring, piston cup and bleeder cap. The slave piston is a separate product, sold singly, and should be assessed for damage before reuse.

Is the clutch pushrod kit a complete master-cylinder rebuild?

No. It contains the pushrod and bushing at the lever-operated end. The hydraulic clutch master kit is the separate 22886-MB0-305 replacement; the front brake master kit and engine-side slave kit serve other assemblies.

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