Determine whether your 1980 CB650 needs a reservoir, its cover or an entire master-cylinder assembly replaced. Those choices use different products. The four-screw reservoir kit depends on the old diaphragm plate, so check retained pieces before buying.
1969 Honda CB750K Motorcycle Parts1970 Honda CB750K Motorcycle Parts1971 Honda CB500K Four Motorcycle Parts1971 Honda CB750K Motorcycle Parts1972 Honda CB350F0 Motorcycle Parts1972 Honda CB500K Four Motorcycle Parts1972 Honda CB750K Motorcycle Parts1973 Honda CB350F0 Motorcycle Parts1973 Honda CB350G Motorcycle Parts1973 Honda CB500K Four Motorcycle Parts1973 Honda CB750K Motorcycle Parts1974 Honda CB350F1 Motorcycle Parts1974 Honda CB360G Motorcycle Parts1974 Honda CB550K Motorcycle Parts1974 Honda CB750K Motorcycle Parts1975 Honda CB360T Motorcycle Parts1975 Honda CB400F Motorcycle Parts1975 Honda CB500T Twin Motorcycle Parts1975 Honda CB550F Supersport Motorcycle Parts1975 Honda CB550K Motorcycle Parts1975 Honda CB750F Motorcycle Parts1975 Honda CB750K Motorcycle Parts1976 Honda CB360T Motorcycle Parts1976 Honda CB400F Motorcycle Parts1976 Honda CB500T Twin Motorcycle Parts1976 Honda CB550F Supersport Motorcycle Parts1976 Honda CB550K Motorcycle Parts1976 Honda CB750A Motorcycle Parts1976 Honda CB750F Motorcycle Parts1976 Honda CB750K Motorcycle Parts1977 Honda CB400F Motorcycle Parts1977 Honda CB550F Supersport Motorcycle Parts1977 Honda CB550K Motorcycle Parts1977 Honda CB750A Motorcycle Parts1977 Honda CB750F Motorcycle Parts1977 Honda CB750K Motorcycle Parts1978 Honda CB550K Motorcycle Parts1978 Honda CB750A Motorcycle Parts1978 Honda CB750F Motorcycle Parts1978 Honda CB750K Motorcycle Parts1979 Honda CB650 Motorcycle Parts1980 Honda CB400TA Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1981 Honda CB400TB Motorcycle Parts1981 Honda CB650 Motorcycle Parts1981 Honda CB650C Custom Motorcycle Parts1982 Honda CB450T Hawk Motorcycle Parts1982 Honda CB650 Motorcycle PartsHonda CB Brake & Clutch PartsHonda CB Brake Master Cylinders & Rebuild KitsHonda CB350 Motorcycle Parts by Model & YearHonda CB350F Motorcycle Parts (1972–1974)Honda CB360 Motorcycle Parts by Model & YearHonda CB360T Motorcycle Parts (1975–1976)Honda CB400 Motorcycle Parts by Model & YearHonda CB400F Motorcycle Parts (1975–1977)Honda CB400T Hawk Motorcycle Parts (1978–1981)Honda CB450 Motorcycle Parts by Model & YearHonda CB500 Motorcycle Parts by Model & YearHonda CB500K Motorcycle Parts (1971–1973)Honda CB500T Motorcycle Parts (1975–1976)Honda CB550 Motorcycle Parts by Model & YearHonda CB550F Motorcycle Parts (1975–1977)Honda CB550K Motorcycle Parts (1974–1978)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB750 Motorcycle Parts by Model & YearHonda CB750 SOHC Parts (1969–1978)Honda CB750A Hondamatic Motorcycle Parts (1976–1978)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)New ItemsSeries 5: CB650 (79-82)Series 6: CB500-CB550 (71-78)Series 7: CB400-CB450 (65-86)Series 8: CB350-CB400 (72-77)Series 9: CB350-CB360 (69-75)
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...
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...
1979 Honda CB650 Motorcycle Parts1979 Honda CB750F Motorcycle Parts1979 Honda CB750K Motorcycle Parts1979 Honda CB750L Motorcycle Parts1980 Honda CB400TA Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1980 Honda CB750C Motorcycle Parts1980 Honda CB750F Motorcycle Parts1980 Honda CB750K Motorcycle Parts1980 Honda CB900C Motorcycle Parts1981 Honda CB900C Motorcycle PartsHonda CB Brake & Clutch PartsHonda CB Brake Master Cylinders & Rebuild KitsHonda CB400 Motorcycle Parts by Model & YearHonda CB400T Hawk Motorcycle Parts (1978–1981)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB750 DOHC Parts (1979–1982)Honda CB750 Motorcycle Parts by Model & YearHonda CB750C Custom Motorcycle Parts (1980–1982)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)Honda CB900 Motorcycle Parts by Model & YearHonda CB900C Custom Motorcycle Parts (1980–1982)Series 4: CB900-1100 (80-83)Series 5: CB650 (79-82)Series 7: CB400-CB450 (65-86)
Rebuild your master cylinder reservoir with this Front Master Cylinder Reservoir Rebuild Kit, 4-screw cover type. Includes plastic reservoir, reservoir cap, diaphragm, O-ring, and...
1969 Honda CB750K Motorcycle Parts1970 Honda CB750K Motorcycle Parts1971 Honda CB500K Four Motorcycle Parts1971 Honda CB750K Motorcycle Parts1972 Honda CB350F0 Motorcycle Parts1972 Honda CB500K Four Motorcycle Parts1972 Honda CB750K Motorcycle Parts1973 Honda CB350F0 Motorcycle Parts1973 Honda CB350G Motorcycle Parts1973 Honda CB500K Four Motorcycle Parts1973 Honda CB750K Motorcycle Parts1974 Honda CB350F1 Motorcycle Parts1974 Honda CB360G Motorcycle Parts1974 Honda CB550K Motorcycle Parts1974 Honda CB750K Motorcycle Parts1975 Honda CB360T Motorcycle Parts1975 Honda CB400F Motorcycle Parts1975 Honda CB500T Twin Motorcycle Parts1975 Honda CB550F Supersport Motorcycle Parts1975 Honda CB550K Motorcycle Parts1975 Honda CB750F Motorcycle Parts1975 Honda CB750K Motorcycle Parts1976 Honda CB360T Motorcycle Parts1976 Honda CB400F Motorcycle Parts1976 Honda CB500T Twin Motorcycle Parts1976 Honda CB550F Supersport Motorcycle Parts1976 Honda CB550K Motorcycle Parts1976 Honda CB750A Motorcycle Parts1976 Honda CB750F Motorcycle Parts1976 Honda CB750K Motorcycle Parts1977 Honda CB400F Motorcycle Parts1977 Honda CB550F Supersport Motorcycle Parts1977 Honda CB550K Motorcycle Parts1977 Honda CB750A Motorcycle Parts1977 Honda CB750F Motorcycle Parts1977 Honda CB750K Motorcycle Parts1978 Honda CB550K Motorcycle Parts1978 Honda CB750A Motorcycle Parts1978 Honda CB750F Motorcycle Parts1978 Honda CB750K Motorcycle Parts1979 Honda CB650 Motorcycle Parts1980 Honda CB400TA Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1981 Honda CB400TB Motorcycle Parts1981 Honda CB650 Motorcycle Parts1981 Honda CB650C Custom Motorcycle Parts1982 Honda CB450T Hawk Motorcycle Parts1982 Honda CB650 Motorcycle PartsHonda CB Brake & Clutch PartsHonda CB Brake Master Cylinders & Rebuild KitsHonda CB350 Motorcycle Parts by Model & YearHonda CB350F Motorcycle Parts (1972–1974)Honda CB360 Motorcycle Parts by Model & YearHonda CB360T Motorcycle Parts (1975–1976)Honda CB400 Motorcycle Parts by Model & YearHonda CB400F Motorcycle Parts (1975–1977)Honda CB400T Hawk Motorcycle Parts (1978–1981)Honda CB450 Motorcycle Parts by Model & YearHonda CB500 Motorcycle Parts by Model & YearHonda CB500K Motorcycle Parts (1971–1973)Honda CB500T Motorcycle Parts (1975–1976)Honda CB550 Motorcycle Parts by Model & YearHonda CB550F Motorcycle Parts (1975–1977)Honda CB550K Motorcycle Parts (1974–1978)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB750 Motorcycle Parts by Model & YearHonda CB750 SOHC Parts (1969–1978)Honda CB750A Hondamatic Motorcycle Parts (1976–1978)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)New ItemsSeries 5: CB650 (79-82)Series 6: CB500-CB550 (71-78)Series 7: CB400-CB450 (65-86)Series 8: CB350-CB400 (72-77)Series 9: CB350-CB360 (69-75)
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...
1979 Honda CB400TIIZ Motorcycle Parts1979 Honda CB650 Motorcycle Parts1979 Honda CB750F Motorcycle Parts1979 Honda CB750K Motorcycle Parts1979 Honda CB750L Motorcycle Parts1980 Honda CB400TA Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1980 Honda CB750C Motorcycle Parts1980 Honda CB750F Motorcycle Parts1980 Honda CB750K Motorcycle Parts1980 Honda CB900C Motorcycle Parts1981 Honda CB900C Motorcycle PartsHonda CB Brake & Clutch PartsHonda CB Brake Master Cylinders & Rebuild KitsHonda CB400 Motorcycle Parts by Model & YearHonda CB400T Hawk Motorcycle Parts (1978–1981)Honda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB750 DOHC Parts (1979–1982)Honda CB750 Motorcycle Parts by Model & YearHonda CB750C Custom Motorcycle Parts (1980–1982)Honda CB750F Motorcycle Parts (1975–1982)Honda CB750K Motorcycle Parts (1969–1982)Honda CB900 Motorcycle Parts by Model & YearHonda CB900C Custom Motorcycle Parts (1980–1982)Series 4: CB900-1100 (80-83)Series 5: CB650 (79-82)Series 7: CB400-CB450 (65-86)
Replace the diaphragm on your early DOHC CB's front master cylinder reservoir with this Front Master Cylinder Reservoir Diaphragm, replacing OEM #45520-422-026 / #45520-422-006...
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,...
Replace the brake lever specifically on the #08-0457 Master Cylinder (sold separately) with this Brake Lever.Important: this lever is ONLY for Master Cylinder #08-0457,...
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...
1979 Honda CB650 Motorcycle Parts1979 Honda CB750K Motorcycle Parts1980 Honda CB650 Motorcycle Parts1980 Honda CB650C Custom Motorcycle Parts1981 Honda CB650 Motorcycle Parts1981 Honda CB650C Custom Motorcycle Parts1982 Honda CB650 Motorcycle Parts1982 Honda CB650SC Nighthawk Motorcycle PartsHonda CB Brake & Clutch PartsHonda CB Brake Master Cylinders & Rebuild KitsHonda CB Electrical & Ignition PartsHonda CB Switches & SensorsHonda CB650 Motorcycle Parts (1979–1982)Honda CB650 Motorcycle Parts by Model & YearHonda CB650C Custom Motorcycle Parts (1980–1981)Honda CB650SC Nighthawk Motorcycle Parts (1982–1985)Honda CB750 DOHC Parts (1979–1982)Honda CB750 Motorcycle Parts by Model & YearHonda CB750K Motorcycle Parts (1969–1982)New ItemsSeries 5: CB650 (79-82)
Restore reliable brake light activation with this Rear Stop Light Switch, designed as a direct replacement for several original Honda rear brake switches. This...
Build a custom front brake setup with this Magura Universal Front Brake Master Cylinder. Features a 13mm piston diameter, 12mm stroke, and a threaded...
Choose a repair scope before choosing a master-cylinder kit
The reservoir kit and separate chrome cap offer different repair scopes. Complete aftermarket assemblies introduce their own bore, switch and lever requirements, making the installed cylinder’s identity the first ordering check.
The chrome-cover listing identifies the cover but does not itemize screws or a diaphragm. Confirm the supplied contents if your repair also needs those pieces, rather than assuming the cover package matches the larger reservoir kit.
Check the replacement switch and hydraulic interfaces
The black assembly has an integrated brake-light switch with two small spade connectors. Compare those connections with the motorcycle wiring, and have its hydraulic suitability, hose connection and lever clearance checked before substitution.
Ordering questions
What happens if the old reservoir diaphragm plate is missing?
The four-screw reservoir kit instructs you to reuse the diaphragm plate from the old master cylinder. Resolve a missing or unusable plate before relying on this package to complete the reservoir repair.
Can I buy a diaphragm without the larger reservoir package?
The separate diaphragm replaces 45520-422-026, 45520-422-006 or 45520-422-016. Compare it with the fitted reservoir and inspect the retained parts before choosing that narrower repair.
Will the chrome cover fit an aftermarket reservoir?
That is not established by the motorcycle application. Compare the actual cover mounting and sealing interface with the replacement reservoir; a four-screw description alone does not prove interchangeability.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.