| MODEL | BMW R 37 1925 - 1926 |
| Year | 1925 - 1926 |
| Engine Type | Four stroke, two cylinder horizontally opposed boxer, OHV |
| Displacement / Capacity | 494 cc / 30.1 cu in |
| Bore X Stroke | 68 x 68 mm |
| Compression Ratio | 6.2:1 |
| Cooling System | Air cooled |
| Max Power | 11.9 kW / 16 hp @ 4000 rpm |
| Max Torque | — |
| Ignition | Bosch magneto ignition |
| Induction | 1x BMW Spezial three-slide 26 mm |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 3 Speed |
| Clutch | Single plate saucer spring, dry |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Twin loop tubular frame |
| Front Suspension | Trailing link with twin cantilever leaf spring |
| Rear Suspension | Rigid, spring loaded saddle |
| Front Brakes | 150 mm drum |
| Rear Brakes | Block brake |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 720 mm / 28.3 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 134 kg / 295 lbs |
| WHEEL SPECS | |
| Front Tyre | 26 x 3.00 |
| Rear Tyre | 26 x 3.00 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | 4 L/100 km |
| Top Speed | 115 km/h / 71 mph |
Photo: Lothar Spurzem, CC BY-SA 2.0 de, via Wikimedia Commons
Photo: Arnaud 25, CC BY-SA 4.0, via Wikimedia Commons
The R 37 was a sports version of the R 32 developed by Rudolf Schleicher, with a new overhead-valve cylinder head that nearly doubled output to 16 hp. It became the basis of BMW's early racing machines and helped the factory dominate German 500 cc competition in the mid-1920s. Only 152 were built.
