The BSA C11 is a British motorcycle manufactured by Birmingham Small Arms Company (BSA) at their factory in Armoury Road, Small Heath, Birmingham, between 1939 and 1956. Actor Steve McQueen owned a 1951 BSA C11.

The BSA C11 was a pre-unit single-cylinder developed before the Second World War from the sidevalve C10. Fitted with overhead valves and displacing 249cc, the C11 was launched in 1939 and continued to be developed into the 1950s. The C11 frame was improved in 1951 when BSA added plunger rear suspension.

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2016年6月20日 · The C11 runs quite a heavy flywheel, slamming the throttle shut can have the wheel reacting against the bump. Depending on the angle of lean, severity of the bump and degree of velocity this can be mildly amusing or a near death experience.

2016年1月13日 · In the engine department, it comes with an air-cooled, four-stroke, 249 cc, single cylinder powerhouse mated to a four-speed manual transmission and can produce 12 horsepower at 4000...

2022年8月4日 · This BSA C11 is now offered at no reserve with a tool kit, a tire pump, an owner’s manual, a copy of a parts catalog, a digital workshop manual, a period advertisement, documentation, and New Hampshire registration in the seller’s name.

BSA C11 250cc Motorcycle. A 1946 BSA C11, 250cc single-cylinder ohv motorcycle manufactured by the British company BSA (Birmingham Small Arms Company). The C11 was developed before the Second World War from the sidevalve C10, it was launched in 1939 and continued to be developed into the 1950's.

2023年11月20日 · The BSA C11 has standard fittings such as a dual seat, dual plunger shocks as a rear suspension a small fuel tank, a front telescopic fork, an analogue instrumentation panel, laced wheels, full...

2017年2月13日 · This BSA went under the hammer—and Brooklyn resident Tim Harney, took it home. “The bike was literally a pile of broken bolts and bent metal,” Tim tells us. “Hidden inside its warped cases, however, beat the heart of a 1951 BSA C11.”

1939 BSA C11 specs, performance data, engine specifications, pictures.