| Manufacturer | Honda |
|---|---|
| Also called | Nighthawk 650 |
| Production | 1982–1985 |
| Class | standard |
| Engine | 656 cc air/oil-cooled inline four-cylinder |
| Power | 72 hp (54 kW) at 10,000 RPM |
| Transmission | 6-speed |
| Frame type | tubular steel full cradle |
| Suspension | Front: Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive Rear: dual Showa shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping |
| Brakes | Front: Dual single-action hydraulic calipers, 10.9 in (276 mm) discs Rear: Drum, single-leading shoe, rod-operated |
| Wheelbase | 57.8 in (1467 mm) |
| Seat height | 30.7 in (780 mm) |
| Weight | 451 lb (205 kg) (dry) |
| Fuel capacity | 3.4 US gallon (12.9 liter), (0.5 US gallon reserve) |
| Related | CB700SC |
Honda marketed the CB650SC (also called Nighthawk 650) in the US from 1982–1985. In 1982 the Nighthawk replaced the Custom of the previous years and featured a re-designed tank and side covers. In 1983 a new DOHC engine replaced the SOHC engine used since 1979. The new engine had hydraulic valve lash adjusters and was rubber mounted. This year also saw the move from chain drive to shaft-drive for this model.