|Bore x Stroke (mm)||78 x 78|
|HP @ RPM||22 @ 4600|
|Valves||OHV, 2 per cylinder|
|Clutch||Dry, single plate, cable operated|
|Transmission||4 speed, foot shifted|
|Frame||Tubular steel double cradle|
|Front Suspension||Hydraulically damped telescopic fork|
|Front Brakes||200mm drum, single leading shoe|
|Rear Brakes||200mm drum, single leading shoe|
|Spark Plugs||Bosch W175|
|Generator||Bosch RD 45/6 6V 45/70W (early) RD 50/6 6V 50/75W (late)|
|Capacities & Measurements|
First range of serial numbers produced in 1938-39, second in 1941. The 1941 motorcycles left the factory with matching engine and frame numbers.
The information provided here was obtained from a variety
of public sources and may not reflect official BMW archival data.
Please contact the BMW Archives for official data regarding models.