BSA M 21 - Technical Data, Images, Discussions

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1956 BSA M 21. Picture credits - Picautos.com

BSA M 21 model overview

BSA M 21 models include the 4 motorcycles below produced from 1953 to 1956. The 1956 BSA M 21 motorcycle is used as an example on this page. It has a 591 ccm single cylinder engine. The category is allround.

Engine and transmission
Displacement:	591.0 ccm (36.06 cubic inches)
Power:	15.0 HP (10.9 kW) @ 4000 RPM
Clutch:	Wet multiplate
Frame, dampers, brakes and wheels
Frame type:	Single cradle
Front dampers:	Hydraulic telescopic
Rear dampers:	Twin shock
Front tire:	3.25-19
Rear tire:	3.25-19
Front brakes:	Expanding brake (drum brake)
Rear brakes:	Expanding brake (drum brake)
Wheels:	Spoked
Weight and dimentions
Fuel tank:	11.4 litres (3.00 gallons)
Other information

Engine and transmission

Displacement:

591.0 ccm (36.06 cubic inches)

Power:

15.0 HP (10.9 kW) @ 4000 RPM

Clutch:

Wet multiplate

Frame, dampers, brakes and wheels

Frame type:

Single cradle

Front dampers:

Hydraulic telescopic

Rear dampers:

Twin shock

Front tire:

3.25-19

Rear tire:

3.25-19

Front brakes:

Expanding brake (drum brake)

Rear brakes:

Expanding brake (drum brake)

Wheels:

Spoked

Weight and dimentions

Fuel tank:

11.4 litres (3.00 gallons)

Other information

Click any BSA M 21 motorcycle model for more details:

  1956 BSA M 21 (Allround, 591 ccm)
  1955 BSA M 21 (Allround, 591 ccm)
  1954 BSA M 21 (Allround, 591 ccm)
  1953 BSA M 21 (Allround, 591 ccm)

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