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| Model | BMW R51 2 |
| Year | 1950 |
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|---|
| Displacement | 494.0 ccm (30.14 cubic inches) |
| Engine type | Two cylinder boxer, four-stroke |
| Power | 24.1 HP (17.6 kW) @ 5600 RPM |
| Top speed | 135.0 km/h (83.9 mph) |
| Compression | 6.4:1 |
| Bore x stroke | 68.0 x 68.0 mm (2.7 x 2.7 inches) |
| Fuel system | Carburettor. Bing 22mm |
| Fuel control | Overhead Valves (OHV) |
| Ignition | Battery |
| Lubrication system | Wet sump |
| Cooling system | Air |
| Gearbox | 4-speed |
| Transmission type | Shaft drive (cardan) (final drive) |
| Clutch | Dry-single plate-cable operated |
| Fuel consumption | 4.10 litres/100 km (24.4 km/l or 57.37 mpg) |
| Greenhouse gases | 95.1 CO2 g/km. (CO2 - Carbon dioxide emission) |
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|---|
| Frame type | Steel single cradle |
| Front suspension | Cartridge |
| Rear suspension | Twin shock-Swingarm |
| Front tire | 3.50-19.00 |
| Rear tire | 3.50-19.00 |
| Front brakes | Expanding brake (drum brake). Half hub |
| Diameter | 200 mm (7.9 inches) |
| Rear brakes | Expanding brake (drum brake). Half hub |
| Diameter | 200 mm (7.9 inches) |
| Seat | Solo seat with springs |
| Weight incl. oil, gas, etc | 185.0 kg (407.9 pounds) |
| Overall height | 720 mm (28.3 inches) |
| Overall length | 2130 mm (83.9 inches) |
| Overall width | 815 mm (32.1 inches) |
| Ground clearance | 120 mm (4.7 inches) |
| Wheelbase | 1400 mm (55.1 inches) |
| Fuel capacity | 14.00 litres (3.70 US gallons) |
