BMW R37: history, specs, pictures

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BMW R 37
Production 1925
Class Classic
air-cooled, four-stroke, boxer twin cylinder, OHV
Bore / Stroke 68.6mm x 68.6mm
Compression ratio 6.2:1
Top Speed 71 mph (115 km/h)
Horsepower 15.96 HP (11.9 KW) @ 4000RPM
Transmission Gear box: 3 speed, manual
Clutch: dry, single plate
Suspension Front: twin cantilever spring
Rear: hard-tail, sprung seat
Brakes Front: 150mm drum
Rear: block brake
Front Tire 26 x 3.00
Rear Tire 26 x 3.00
Wheelbase 54.33 inches (1380 mm)
Length 82.68 inches (2100 mm)
Width 31.5 inches (800 mm)
Weight 134.0 kg (wet)
Fuel Consumption 4.00 liters/100 km (25.0 km/l or 58.81 mpg)
Manuals Service Manual

The BMW R 37 was a air-cooled, four-stroke, boxer twin cylinder, OHV Classic motorcycle produced by BMW in 1925. Claimed horsepower was 15.96 HP (11.9 KW) @ 4000 RPM.


A 68.6mm bore x 68.6mm stroke result in a displacement of just 494.0 cubic centimeters.


The bike has a 3 speed, manual transmission. Power was moderated via the dry, single plate.


It came with a 26 x 3.00 front tire and a 26 x 3.00 rear tire. Stopping was achieved via 150mm drum in the front and a block brake in the rear. The front suspension was a twin cantilever spring while the rear was equipped with a hard-tail, sprung seat. The wheelbase was 54.33 inches (1380 mm) long.

1925 - 1927 BMW R 37[edit]


The 1925 BMW R 37 comes with features such as front and rear luggage racks, laced wheels with whitewall tires mounted on them, a cantilever spring front suspension coupled to a hard-tail in the rear, a single, sprung saddle, a front drum brake and a block brake in the rear, a center stand and pull-back handlebars. In the engine department it sports an air-cooled, four-stroke, 494cc, boxer twin cylinder engine mated to a three-speed manual transmission and can produce a claimed 16 horsepower at 4000 rpm.