BSA M Models/Series Timeline, Specifications & Photos

The BSA M20 was one of the most successful models produced by the British brand, being used also by the British Army throughout World War II. It had, at its heart, an air-cooled, four-stroke, 496cc, single cylinder powerplant mated to a four-speed manual transmission and can produce a claimed 13 horsepower at 4200 rpm. Standard fittings for this machine included a single, sprung seat, a hard-tail rear suspension, a parallelogram front fork, a large headlight, a steel exhaust system, pull-back handlebars, laced wheels and analogue instrumentation dials.

The BSA M24 boasts standard features such as an laced wheels, full fenders, a hard-tail rear suspension with a sprung seat, a single spring girder fork in the front, drum brakes, a large headlight, a chromed exhaust system, wide handlebars and analogue instrumentation dials. At its heart lies an air-cooled, four-stroke, 498cc, single cylinder powerhouse paired to a four-speed manual transmission.

The BSA M22 comes with features such as a single sprung seat, a mid-mounted exhaust system, a parallelogram front fork, a large headlight, full fenders, a rear luggage rack, a black frame, analogue instrumentation dials, a hard-tail rear suspension and laced wheels. In the engine department it sports an air-cooled, four-stroke, 496cc, single cylinder powerhouse paired to a four-speed manual transmission that can produce a claimed 22 horsepower at 5400 rpm.

The M21 from British manufacturer BSA sports an air-cooled, four-stroke, 591cc, single cylinder powerplant mated to a four-speed manual transmission that can reach a maximum power output of 15 horsepower at 4200 rpm. Standard fittings for this classic machine include laced wheels, drum brakes in the front and in the rear, a large headlight, a hard-tail rear suspension, a single spring girder fork in the front, a sprung single seat and a chromed exhaust system.

The BSA M19 sports an air-cooled, four-stroke, 349cc, single cylinder powerplant mated to a four-speed manual transmission. Also, it comes with a parallelogram front fork, a hard-tail rear suspension with a sprung single seat, a steel exhaust system with a large muffler, a large, round headlight, laced wheels, drum brakes in the front and in the rear and wide handlebars.