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1972 Honda CB450K Caliper Repairs, Hydraulic Lines & Clutch Service

Organize a 1972 CB450K brake and clutch order by the assembly that will stay on the motorcycle. A replacement caliper, a hose section and a friction plate have different coverage. Compare retained components, package contents and required quantities before combining those repairs into one purchase.

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Currently viewing Brake & Clutch

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 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 CB1100 CB1000 CB900 CB750 CB500 clutch tab washer 90431-292-000

Honda CB Clutch Tab Washer ~ Replaces 90431-292-000

$7.50 USD
73-0839
Replace your clutch tab washer with this Clutch Washer, 16mm size, replacing OEM #90431-292-000.Key Features• Clutch tab washer• 16mm size• Replaces OEM #90431-292-000• Honda...
Honda CB750 CB550 CB450 CB400F clutch lever 53178-369-700

Honda CB Clutch Lever ~ Replaces 53178-369-700

$9.95 USD
08-0006
Replace a worn silver-with-black-tip clutch lever with this Clutch Lever, a direct replacement for OEM #53178-369-700. Exceptionally broad fitment across the classic Honda lineup,...
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 CB700 CB650 rear friction shoe spring set 2 43151-346-000

Honda CB Rear Friction Shoe Spring Set/2 ~ Replaces 43151-346-000

$7.95 USD
73-0895
Replace your rear brake shoe springs with this Rear Brake Shoe Spring Set of 2, replacing OEM #43151-346-000.Key Features• Rear brake shoe spring set•...
Honda CB750 CB550 CB450 CB400F brake lever 53175-369-003

Honda CB Brake Lever ~ Replaces 53175-369-003

$9.95 USD
08-0007
Match the clutch-side silver-with-black-tip lever with this Brake Lever, a direct replacement for OEM #53175-369-003. Fits the same broad SOHC CB750 and classic Honda...
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 CB500 CB450 front friction pad set 45105-323-023

Honda CB Front Friction Pad Set ~ Replaces 45105-323-023

$32.95 USD
29-3501
Replace your front brake pads with this Brake Pad Set of 2 in Kevlar, 52 x 20mm + 52 x 12.8mm. Replaces OEM #45105-323-023...
Honda CB750 CB550 CB500 CB450 front stop hose in.a in. 45125-300-003

Honda CB Front Stop Hose "A" ~ Replaces 45125-300-003

$47.95 USD
51-7205
Replace your front brake hose "A" with this Front Brake Hose "A", connecting the 3-way joint to the front brake pipe. Replaces OEM #45125-300-003....
Honda CB750 CB550 handlebar brake lever pivot bolt and nut set 90114-300-000

Honda CB Handlebar Brake Lever Pivot Bolt & Nut Set ~ Replaces 90114-300-000

$7.95 USD
73-1029
Replace your brake lever pivot hardware with this Brake Lever Pivot Bolt & Nut Set, used to fasten the brake lever in place. Includes...
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 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 CB700 CB500 CB450 CL450K0 steel clutch plate 22321-MG8-000

Honda CB Steel Clutch Plate ~ Replaces 22321-MG8-000

$11.95 USD
39-1409
Replace your SOHC CB750, CB700SC Nighthawk, CB500T, or CB450/CL450 steel clutch plate with this Steel Clutch Drive Plate, replacing OEM #22321-MG8-000 / #22321-283-000.Order the...
Honda CB750F CB750K CB450K front stop hose "b" 45126-341-003

1972-76 Honda CB750F / CB750K / CB450K Front Stop Hose "B" ~ Replaces 45126-341-003

$49.95 USD
51-7204
Replace your front brake hose "B" with this Front Brake Hose "B", connecting the front brake master cylinder to the 3-way joint. Replaces OEM...
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 CB550 CB500 CB450 front brake pipe 45128-323-020

Honda CB Front Brake Pipe ~ Replaces 45128-323-020

$17.09 USD
07-9971
Replace the front brake pipe on a wide range of '70s Hondas with this Front Brake Pipe, replacing OEM #45128-323-020. Approximately 8" total length,...
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•...
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Honda CB750 CB550 CB450 gp-style clutch lever 53178-369-700

Honda CB GP-Style Clutch Lever ~ Replaces 53178-369-700

$9.95 USD
08-0080
Bring racetrack-inspired ergonomics to your cockpit with this Custom GP-Style Clutch Lever in silver. Features a more pronounced bend/kickback than the stock lever, for...
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 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 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 CB550 CB500 CB450 brake hose rubber grommet 45146-300-000

Honda CB Brake Hose Rubber Grommet ~ Replaces 45146-300-000

$4.61 USD
73-0091
Replace your brake hose grommet with this Brake Hose Rubber Grommet, the rubber grommet that attaches to the brake hose, replacing OEM #45146-300-000.Key Features•...
Honda CB750 CB550 CB500 CB450 CB400 brake lever gp style 53175-369-003

Honda CB Brake Lever ~ GP Style ~ Replaces 53175-369-003

$10.95 USD
08-0414
Match your GP-style clutch lever with this Custom GP-Style Brake Lever in silver. Features a more pronounced bend/kickback than stock for that classic race-lever...
New
Honda CB550 CB500 CB450 CB400 CB360 front caliper piston 45107-323-020

Honda CB Front Caliper Piston ~ Replaces 45107-323-020

$21.78 USD
29-0058
Replace your front brake caliper piston with this Front Brake Caliper Piston, 38.15mm diameter x 34mm height, replacing OEM #45107-323-020. The side with 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,...
Honda CB750K CB500T CB450K front stop hose guide 45129-300-000

1969-76 Honda CB750K / CB500T / CB450K Front Stop Hose Guide ~ Replaces 45129-300-000

$8.95 USD
73-0950
Replace your front brake hose guide with this Front Brake Hose Guide, replacing OEM #45129-300-000.Key Features• Front brake hose guide• Replaces OEM #45129-300-000• Honda...
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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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 CB550 CB500 CB450 front brake caliper assembly 45100-390-405

Honda CB Front Brake Caliper Assembly ~ Replaces Honda OEM 45100-390-405

$119.95 USD
33-0039
Replace a worn, seized, damaged, or missing front brake caliper with this aftermarket full caliper assembly for Honda CB models. It is a replacement...
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 CB125S CB175 CB350 CB450 hand lever 53175-402-700

Honda CB Hand Lever ~ Replaces 53175-402-700

$9.95 USD
08-0066
Fit a silver-with-black-tip brake lever on your small-bore Honda with this Brake Lever, replacing a range of OEMs (#53175-402-700, #53170-216-670, #53175-286-000, #53170-286-670, #53170-329-010, #53170-369-700,...
Honda CB1000 CB500 CB450 CL450K0 clutch friction plate 22201-MA7-000

Honda CB Clutch Friction Plate ~ Replaces 22201-MA7-000

$8.95 USD
39-1046
Replace your clutch friction plates with this Clutch Friction Plate, replacing OEM #22201-MA7-000 / #22201-283-000.Order the number of pieces required for your model.Key Features•...
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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1972 Honda CB450K · Brake & Clutch Buying guide

Identify retained assemblies before adding repair parts

The aftermarket caliper names major included components but may require final assembly. Hose A identifies one hydraulic section, while rod hardware and hand controls address other repairs. Clutch application counts describe pieces used on the bike, without establishing full supplied plate packs.

Parts to consider

Honda CB Front Brake Caliper Assembly ~ Replaces Honda OEM 45100-390-405 Aftermarket caliper with major componentsAssembly referencing Honda 45100-390-405, sold each. Lists body, pads, piston, piston rubber, bleed screw, bolts and bleed cap. The description says final assembly may be required before installation; compare the original caliper and reference.View part Honda CB Front Stop Hose "A" ~ Replaces 45125-300-003 13.75-inch joint-to-pipe hose AHose referencing Honda 45125-300-003. Its stated section connects the three-way joint to the front brake pipe. Check that section’s actual connections and routed length; hose name alone does not identify a changed installation.View part Honda CB Clutch Friction Plate ~ Replaces 22201-MA7-000 Friction plate with stated application countPlate referencing Honda 22201-MA7-000 / 22201-283-000. The CB450K uses seven pieces according to the description. Confirm the quantity actually supplied by a purchase before treating that required count as an order size.View part

Related parts: Service kit for the retained master · Clutch control attachment comparison · Rod-to-arm joint identification

Read the replacement caliper’s coverage before adding extras

Body, pads, piston, piston rubber, bleed screw, bolts and bleed cap are listed with the aftermarket caliper. Review those contents before adding separate service parts for the same location. Its possible final-assembly requirement also matters when planning the repair; the named components do not establish an assembled delivery state.

Check a changed master independently of a model-listed repair kit

Universal 13mm masters require a match to the custom hydraulic arrangement, fittings, switch and mirror needs. The 45530-377-305 rebuild kit’s motorcycle application does not prove it services either universal assembly. Retained clutch controls and plates likewise need their own references and quantity checks.

Brake and clutch order-planning decisions

When does a complete caliper purchase still need preparation beyond fitting it?

The description expressly says final assembly may be required before installation. Confirm the delivery state and planned work, compare the retained caliper and reference 45100-390-405, and use the written component list when deciding which separate parts would duplicate that purchase.

Can I choose a line section from the words hose A or hose B alone?

Use the documented endpoints too. Hose A is the 13.75-inch joint-to-pipe section; the selected hose B is the 15.5-inch master-to-joint section. Compare the actual route and fittings, especially where the master or hydraulic layout was changed.

How should a seven-friction-plate application affect the order?

First confirm the pieces supplied by the plate purchase. Seven is the stated CB450K application requirement, while the description does not expressly identify a supplied seven-plate pack. Calculate the order from the verified clutch and repair scope after resolving that purchase quantity.

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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