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1978 Honda CB400A Brake Parts

The 1978 Honda CB400A uses a hydraulic front disc brake and a mechanically operated rear brake. Its left-hand control operates a parking brake. Choose friction parts, hydraulic service items and replacement levers for their actual positions on this Hondamatic.

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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 Brake & Clutch

Honda motorcycle parts

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

Honda CB900 CB750 CB650 caliper piston sealing ring 45108-300-003

Honda CB Caliper Piston Sealing Ring ~ Replaces 45108-300-003

$7.95 USD
29-0527
Replace your front caliper piston sealing ring with this Front Brake Caliper Piston Sealing Ring, replacing OEM #45108-300-003. Also fits the rear brake caliper...
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...
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 CB750 CB550 handlebar clutch lever pivot bolt and nut set 90114-310-000

Honda CB Handlebar Clutch Lever Pivot Bolt & Nut Set ~ Replaces 90114-310-000

$6.95 USD
73-0996
Replace your clutch lever pivot hardware with this Handlebar Clutch Lever Pivot Bolt & Nut Set, used to fasten the clutch lever in place....
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 CB400 front master cylinder kit 45530-404-315

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-404-315

$59.95 USD
08-0281
Service your late-'70s CB750K/A, CB550, or CB400 front master cylinder with this Front Brake Master Cylinder Rebuild Kit, replacing OEM #45530-404-315. Made in Japan.Key...
Honda CB750 CB650 CB400 front friction pad set 45105-425-003

Honda CB750 / CB650 / CB400 Front Friction Pad Set ~ Replaces 45105-425-003

$28.95 USD
29-3521
Replace your DOHC CB750 or CB650 front brake pads with this Brake Pad Set in Kevlar, 52.4 x 52.5 x 11.2mm, replacing OEM #45105-425-003...
Honda CB750 CB650 CB550 CB500 brake rod spring 95014-73100

Honda CB750/CB650/CB550/CB500 Brake Rod Spring

$2.95 USD
29-7006
Replace your brake rod spring with this Brake Rod Spring, replacing OEM #95014-73100. Exceptionally broad fitment across the SOHC and DOHC CB750 lineup, CB650...
Honda CB750 CB700 CB650 CB550 brake rod joint 95015-32001

Honda CB750/CB700/CB650/CB550 Brake Rod Joint

$3.50 USD
73-0843
Replace your brake rod joint with this Brake Rod / Arm Joint, replacing OEM #95015-32001.Key Features• Brake rod / arm joint• Replaces OEM #95015-32001•...
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 CB750 CB700 CB650 CB550 CB500 brake rod joint pin w cotter pin

Honda CB Brake Rod Joint Pin with Cotter Pin

$5.95 USD
73-0844
Replace your brake rod joint pin with this Brake Rod Joint Pin with Cotter Pin, replacing OEM #95015-52000 (joint pin) and #94201-16250 (cotter pin).Key...
Honda CB750 CB700 CB650 CB550 CB500 brake rod adjusting nut 95015-42000

Honda CB Brake Rod Adjusting Nut

$4.50 USD
73-0845
Replace your brake rod adjusting nut with this Brake Rod Adjusting Nut, replacing OEM #95015-42000.Key Features• Brake rod adjusting nut• Replaces OEM #95015-42000• Honda...
Honda CB750 CB400 hand lever 53175-431-670

Honda CB Hand Lever ~ Replaces 53175-431-670

$9.95 USD
08-0082
Replace a worn silver brake lever with this Brake Lever, a direct replacement for OEM #53175-431-670. Fits the late-'70s CB750K/F/A range plus the CB400A...
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 CB1100 CB1000 clutch lever brake light switch 35330-413-003

Honda CB Clutch Lever Brake Light Switch ~ Replaces 35330-413-003

$15.95 USD
29-7029
Replace your front clutch lever safety stop switch with this Clutch Lever Stop Switch, replacing OEM #35330-413-003. This is the switch that allows the...
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 CB550 rear brake stopper arm strap joker machine 43431-286-010

Honda CB Rear Brake Stopper Arm Strap ~ Joker Machine ~ Replaces 43431-286-010

$49.95 USD
73-1073
Replace your rear brake stopper arm strap with this Joker Machine Brand Custom Rear Brake Stopper Arm Strap, replacing OEM #43431-286-010 / #43431-340-000.This strap...
Honda CB750C CB650C CB400 brake caliper piston 45107-413-003

1978-81 Honda CB750C / CB650C / CB400 Brake Caliper Piston ~ Replaces 45107-413-003

$69.95 USD
99-5101
Upgrade or restore your classic Honda motorcycle braking system with this high‑quality Brake Caliper Piston — precision engineered and Japanese made for reliable performance....
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Honda CB750 CB700 CB650 CB550 brake rod adjuster knob joker machine

Honda CB Brake Rod Adjuster Knob ~ Joker Machine

$29.95 USD
73-1072
Upgrade your brake rod adjuster knob with this Joker Machine Brand Custom Brake Rod Adjuster Knob, replacing OEM #95015-42000.Gives your bike a great custom...
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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...
Honda CB550 CB450 CB400 rear friction shoe set 43120-413-006

Honda CB550 / CB450 / CB400 Rear Friction Shoe Set ~ Replaces 43120-413-006

$34.95 USD
29-3102
Replace your CB400 or CB450 rear brake shoes with this Rear Brake Shoe Set of 2, replacing OEM #43120-413-006. Diameter 139mm, width 40mm.Key Features•...
Honda CB750 CB650 CB400 front caliper shaft boots pk 4 45133-413-003

1978-79 Honda CB750 / CB650 / CB400 Front Caliper Shaft Boots Pk/4 ~ Replaces 45133-413-003

$19.95 USD
73-0835
Replace your front caliper shaft boots with these Front Brake Caliper Shaft Boots Pk/4. These rubber covers attach to the front brake caliper. 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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1978 Honda CB400A · Brakes & Levers Buying guide

Select parts for the Hondamatic’s actual brake controls

Front pads, rear shoes and master-cylinder parts serve separate assemblies. The CB400A has no rider-operated clutch, so a broad Brake & Clutch category should not determine which lever or control parts you buy.

Parts to consider

Honda CB750 / CB650 / CB400 Front Friction Pad Set ~ Replaces 45105-425-003 Front brake-pad setKevlar pad set for one front caliper, measuring 52.4 × 52.5 × 11.2 mm.View part Honda CB550 / CB450 / CB400 Rear Friction Shoe Set ~ Replaces 43120-413-006 Rear brake-shoe setSet of two rear shoes, 139 mm diameter and 40 mm wide, for reference 43120-413-006.View part Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-404-315 Front master-cylinder rebuild kitJapanese-made rebuild kit for the 1978 CB400A, replacing reference 45530-404-315.View part

Choose friction parts by wheel and assembly

The front pad set covers one caliper. The rear shoe set contains two shoes and carries its own 139 mm diameter and 40 mm width. Confirm which brake is being serviced and compare the fitted parts before ordering, especially after a wheel or front-end swap.

Keep control functions clear

The CB400A left-hand lever operates its parking brake at the rear wheel; it is not a manual clutch lever. For front hydraulic work, check whether the master cylinder is original or a universal replacement before selecting internal parts or a matching lever.

Brakes & Levers questions

Does this Hondamatic need a clutch lever or clutch cable?

The CB400A has no rider-operated clutch. Its left-hand lever operates the parking brake, so select control hardware for that function rather than applying a manual-Hawk clutch parts list.

Does one front pad set cover the front caliper?

Yes. The featured set is specified for one caliper. Check the pad dimensions and fitted caliper before ordering if the motorcycle’s original front brake has been changed.

Can the rebuild kit be used in a universal master cylinder?

The kit is listed for the CB400A’s original application. A universal replacement needs parts specified for that particular assembly; a shared model category does not establish internal-kit compatibility.

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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