Honda CB550SC

The Honda Nighthawk CB550SC is a four-cylinder motorcycle that Honda manufactured in Japan and sold in the United States in 1983, and in Canada for two years, 1983 and 1984. It had a six-speed manual transmission with an overdrive sixth gear, shaft drive, a single front disc and rear drum brake, side and centre stands and seating for two, with a grab bar at the rear of the passenger seat. It was the first 550 that Honda offered with a double overhead cam, and it used the same camshaft as the slightly larger CB650 Nighthawk. The engine was very low maintenance, with hydraulic self-adjusting valves, and was rated at 75 horsepower in magazines and 64 horsepower at 9,500 rpm in the official service manual, covering the quarter mile in 12.67 seconds.