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Motorcycle specifications BMWR39 1925 The first BMW mono

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Photo of BMW R39 1925

presentation of the R39 1925

The R39 is a motorcycle manufactured by BMW from 1925 to 1927. Its single-cylinder 4-stroke engine and 247 cm3 displacement gave it a power output of 6.5 hp.

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Key facts BMW R39 (1925) : What you need to know before you buy

Prices

Basic version
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Model sold in 1925 1926 1927

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R39 1926

Performance

Specifications BMW R39 1925

Chassis
Frame : two closed loops of parallel steel tubing
Fuel capacity : 10 liters (2.64 US gallons)
Seat height : 720 mm (28.35 in)
Length : 2,050 mm (80.71 in)
Width : 800 mm (31.50 in)
Min height : 950 mm (37.40 in)
Wheelbase : 1,380 mm (54.33 in)
Weight when fully loaded : 110 kg (243 lb)
Front axle
Fork + leaf spring
drum brakes Ø 150 mm (5.91 in)
Transmission
3 stage gearbox
Secondary cardan shaft
Rear axle
rigide
Motor
single-cylinder , 4 strokes
Carburettor Ø 20 mm
Cooling system : by air
2 valves per cylinder
247 cc
7 ch (6.90 hp) to 4,000 rpm
Power-to-weight ratio : approximately 14.56 kg/ch
Compression : 6 : 1
Practical information
Take care of your motorcycle! Find all the parts and maintenance products you need to keep your bike in top condition.
motor fluid exhaust Chain kit electricity filtration braking Tires
Motorcyle equipment adapted for all members of the family and security elements.

Gallery

BMW R39 1925 - 1
BMW R39 1925 - 2
BMW R39 1925 - 3
BMW R39 1925 - 4
BMW R39 1925 - 5

Models

1927

1926

1925

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FAQ Your frequently asked questions about the R39 1925

What is the power of the R39 1925?
The R39 1925 develops a power of 7 ch (6.90 hp)
What is the maximum speed of the R39 1925?
The R39 1925 is capable of reaching a top speed of approximately 100 km/h (62.10 mph) on the track.
What is the weight of the R39 1925?
The R39 1925 has a a weight when fully loaded of 110 kg (243 lb).
What is the fuel consumption of the R39 1925?
Average fuel consumption is estimated at 2.50 l/100km (0.94 mpg) according to the WMTC cycle.
QWhat is the seat height of the R39 1925?
To ensure good accessibility, the R39 1925 offers a minimum seat height of 720 mm (28.35 in).
What is the price of the R39 1925?
, in France

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