04 June. Thursday 2026
BMW R 45 (reduced Effect) - 1984 Specifications and Reviews
The 1984 BMW R 45 (reduced effect) is an accessible middleweight boxer twin ideal for novice and budget-conscious riders seeking reliability and simplicity. Its 473cc air-cooled engine delivers modest 27 horsepower with characteristic torque, while shaft drive and manageable 206kg weight ensure easy handling and everyday practicality over performance.
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General information | |
| Category | Unspecified category |
| Year | 1984 |
| Model | BMW R 45 (reduced effect) |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Shaft drive (cardan) |
| Gearbox | 5-speed |
| Cooling system | Air |
| Fuel control | OHV |
| Valves per cylinder | 2 |
| Bore x stroke | 70.0 x 61.5 mm (2.8 x 2.4 inches) |
| Compression | 8.2:1 |
| Power | 27.00 |
| Stroke | 4 |
| Engine type | Two cylinder boxer |
| Capacity: | 473.00 ccm (28.86 cubic inches) |
Physical measures and capacities | |
| Weight incl. oil, gas, etc | 206.0 kg (454.2 pounds) |
| | |
BMW R 45 (reduced Effect) dimensions and frame | |
| Rear brakes | Expanding brake |
| Front brakes | Single disc |
| Rear tyre dimensions | 4.00-18 |
| Front tyre dimensions | 3.25-18 |
Speed and acceleration | |
| Top speed | 141.0 km/h (87.6 mph) |
| | |
Other specs | |
| Fuel capacity | 22.00 litres (5.81 gallons) |
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