The Sportster is a standard motorcycle manufactured by Harley-Davidson since 1957. Two versions of the Sportster 1200 are produced as of 2010: the Sportster 1200 Low and the Sportster 1200 Nightster, which differ in terms of styling and ride style.
Both trims of the Sportster 1200 feature an air-cooled, four-stroke, two-cylinder V Twin engine with two valves per cylinder in OHV Pushrod configuration. The engine is controlled by a belt-driven five-speed manual transmission and is activated by an electric starter.
A compression ratio of 9.7:1, and a bore and stroke of 3.5 and 3.81 inches, respectively, produce an engine displacement of 1201.2 cc. The Sportster 1200 has a maximum torque of 79 feet-pounds at 4000 rpm and an engine displacement to weight ratio of 2.21 cc.
The Sportster 1200 has a maximum fuel capacity of 2.1 gallons. In combination with its engine and performance specifications, this gives it a city fuel consumption of 42 miles per gallon, and a highway fuel consumption of 57 miles per gallon.