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BSA M20 (1940-1956) Specs, Performance & Photos

Segment: Clasic
Production years: 1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956

BSA M20 1940-1956 4 Photos
BSA M20 (1940-1956)BSA M20 (1940-1956)BSA M20 (1940-1956)BSA M20 (1940-1956)

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.

BSA M20 1940-1956

BSA M20 496

engine specs
Type:air-cooled, four-stroke, single cylinder, side valve
Displacement:496 cm3
Bore X Stroke:3.2x3.7 in OR 81 mm
Compression Ratio:4.9:1
Horsepower:13/4200 KW(hp)/RPM
Torque:0/- lb-ft/RPM OR 0 Nm/RPM
Fuel System:Amal carburetor
transmission specs
Gearbox:4-speed, manual
Clutch:dry, multi-plate
Primary Drive:-
Final Drive:chain
chassis specs
Frame:steel
Front Suspension:parallelogram fork
Rear Suspension:hard-tail, sprung seat
Front Brake:drum
Rear Brake:drum
dimension specs
Overall Length:85.8 in OR 2179 mm
Overall Width:29.1 in OR 739 mm
Seat Height:28.5 in OR 724 mm
Wheelbase:54 in OR 1372 mm
Ground Clearance:4.7 in OR 119 mm
Weight:368 lbs OR 167 kg
Fuel Capacity:3.7 gallons OR 14.0 L
tyres specs
Front:3.25 x 19
Rear:3.50 x 19
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