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BMW R-37 1925

BMW R-37 1925-1926

The R37 was equipped with aluminium alloy cylinder heads which, combined with overhead valves, gave the machine almost twice the horsepower of earlier engines. This resulted in the R37 having a substantial advantage over the competition - BMW R37 riders won the German championship every year from 1925 to 1929.


Production 1925-1926, 152 built.


Type: M2B 36

Four-stroke horizontally opposed twin
Bore x Stroke 68 x 68 mm,
Displacement 494 cc
Power: 16 hp at 4,000 rpm
Compression Ratio 6.2 : 1
Valve dia. 26 mm

Clutch Single plate, dry

Engine Lubricating System - Oil Pump

Gearbox 3 speed

Electrical System - Bosch, magneto ignition


Frame - Twin loop tubular frame
Twin cantilever spring

Front wheel suspension
Rear wheel suspension
Wheel rims 26 x 2.5"
Tyres, Front and rear 26 x 3"

Front Brake: Drum 150 mm
Rear Brake: Block


Length x Width x Height 2100 x 800 x 950 mm

Wheel Base 1380 mm
Fuel Tank Capacity 14 litres

Weight, wet: 134 Kg

Fuel Consumption Approx. 4 litres per 100 Km

Oil Consumption Approx. 3 litres per 1,000 Km
Top Speed 115 Kph