About the Honda CB650
Choose the repair, then match the complete model, year and fitted assembly on the product page. The 1982/1983 Nighthawk change is especially important for engine and drivetrain parts.
The classic Honda CB650 family spans two mechanically different platforms. The 1979–1982 standard CB650, 1980–1981 CB650C Custom and 1982 CB650SC Nighthawk use the earlier air-cooled SOHC four-cylinder platform and chain final drive. For 1983–1985, the CB650SC moved to a DOHC engine and shaft final drive. That 1982/1983 boundary matters for engine, carburetor and chassis parts.
Choose the model first, then the carburetor year
For the standard CB650, the featured carburetor kits split into 1980 and 1981–1982 applications. The 1980 kit also lists the 1980 CB650C; the later standard-model kit does not. Use the CB650C or CB650SC collection when the suffix appears on the motorcycle.
Identify the model and plan the repairModel and application differences
1979–1982
Standard Honda CB650
The standard model uses the early SOHC, chain-drive platform. The featured overhaul gasket set covers 1979–1982, while the carburetor kits split into 1980 and 1981–1982 applications.
Parts checkpoint: A shared engine family does not make every carburetor, fork or brake part interchangeable across all four years.
1980–1981
CB650C Custom
Keep the C suffix when choosing parts. The featured 1980 carburetor kit also lists the standard CB650, while the linked gasket and fork-seal applications cover both Custom years.
Parts checkpoint: Do not extend the featured 1980 carburetor kit to 1981 without an explicit product application.
Honda CB650C Custom parts1982–1985
CB650SC Nighthawk
The 1982 Nighthawk retains the earlier SOHC engine and chain final drive. The 1983–1985 version uses a different DOHC engine and shaft final drive.
Parts checkpoint: Treat 1982 and 1983–1985 as separate applications for engine, carburetor and drivetrain work.
Honda CB650SC Nighthawk parts
Frame, engine & fitted componentsHonda CB650 identification checklist
Confirm the complete model and the components actually fitted before ordering CB650 parts.
- Record the complete frame/VIN and engine numbers, preserving the C or SC suffix where applicable.
- Confirm the model year from identification evidence rather than a replacement badge or first-registration date.
- For a CB650SC, establish whether it is the 1982 SOHC, chain-drive version or a 1983–1985 DOHC, shaft-drive version.
- Copy the carburetor identification and inspect the fitted forks, wheels and brake assemblies because restoration projects may contain swapped components.
Contact PartsNMore with clear photos of the frame/VIN, engine number, carburetor markings and the part being replaced.
The modern CB650F and CB650R are separate motorcycle generations and are outside this classic CB650 collection.