Honda CB650SC

Honda CB650SC

Manufacturer	Honda
Also called	Nighthawk 650
Production	1979–1985
Class	Standard
Engine	656 cc (40.0 cu in) DOHC, air/oil-cooled inline four-cylinder
Power	72 hp (54 kW) at 10,000 rpm
Transmission	5-speed with overdrive, shaft drive
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)
Fuel consumption	29–55 mpg (US)
Related	CB700SC

The CB650SC (also called the Nighthawk 650) was a Honda standard motorcycle sold 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 1983-1985 a new DOHC engine replaced the SOHC engine used from 1979-1982. 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.