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1956 BSA M 21 Specs

General ─░nformation

Model BSA M 21
Year 1956
Category Allround

Engine and transmission

Displacement 591.00 ccm (36.06 cubic inches)
Power 15.00 HP (10.9 kW)) @ 4000 RPM
Bore x stroke 82.0 x 112.0 mm (3.2 x 4.4 inches)
Fuel system Carburettor
Fuel control Sidevalves
Ignition Magneto
Transmission type, final drive Chain

Chassis, suspension, brakes and wheels

Frame type Single cradle
Front suspension Hydraulic telescopic
Rear suspension Twin shock
Frame 3.25-19
Front tyre 3.25-19
Rear tyre 3.25-19
Front brakes Expanding brake (drum brake)
Rear brakes Expanding brake (drum brake)
Seat Dual

Physical measures and capacities

Fuel capacity 11.36 litres (3.00 gallons)

Other specifications

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