BMW R51/2
| Production Year: | 1950, 1951 |  |
| Type: | air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder |
| engine specs | |
| Type | air-cooled, four-stroke, boxer twin cylinder, 2 valves per cylinder |
| Displacement | 494 cm3 |
| Bore X Stroke | 2.7x2.7 in OR 69 mm |
| Compression Ratio | 6.4:1 |
| Horsepower | 24/5800 KW(hp)/RPM |
| Fuel System | 2xBing Spezial carburetors |
| transmission specs | |
| Gearbox | 4-speed, manual |
| Clutch | dry, single plate |
| Final Drive | shaft |
| chassis specs | |
| Frame | steel |
| Front Suspension | telescopic fork |
| Rear Suspension | coil compression springs and rubber deflection stops |
| Front Brake | 200mm drum |
| Rear Brake | 200mm drum |
| dimension specs | |
| Overall Length | 83.85 in OR 2130 mm |
| Overall Width | 32 in OR 813 mm |
| Weight | 407 lbs OR 185 kg |
| Fuel Capacity | 3.7 gallons OR 14.0 L |
| Wheelbase | 55 in OR 1397 mm |
| tyres specs | |
| Front | 3.5x19 |
| Rear | 3.5x19 |
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