What category is the 1984 BMW R 45 (reduced Effect)?

The 1984 BMW R 45 (reduced Effect) has a Category of Unspecified category.

What is the engine size of the 1984 BMW R 45 (reduced Effect)?

The 1984 BMW R 45 (reduced Effect) has a Capacity: of 473.00 ccm (28.86 cubic inches).

What type of engine does the 1984 BMW R 45 (reduced Effect) have?

The 1984 BMW R 45 (reduced Effect) has a Engine type of Two cylinder boxer.

What is the engine power of the 1984 BMW R 45 (reduced Effect)?

The 1984 BMW R 45 (reduced Effect) has a Power of 27.00.

Is the 1984 BMW R 45 (reduced Effect) air cooled or liquid cooled?

The 1984 BMW R 45 (reduced Effect) has a Cooling system of Air.

How many gears does the 1984 BMW R 45 (reduced Effect) have?

The 1984 BMW R 45 (reduced Effect) has a Gearbox of 5-speed.

How much does the 1984 BMW R 45 (reduced Effect) weigh?

The 1984 BMW R 45 (reduced Effect) has a Weight incl. oil, gas, etc of 206.0 kg (454.2 pounds).

What is the top speed of the 1984 BMW R 45 (reduced Effect)?

The 1984 BMW R 45 (reduced Effect) has a Top speed of 141.0 km/h (87.6 mph).

BMW R 45 (reduced Effect) - 1984 Specifications and Reviews

Name: 1984 BMW R 45 (reduced Effect)
Brand: BMW

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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1984

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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
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	22.00 litres (5.81 gallons)

Performance Profile & Rider Fit

27 hp

Peak Power

10.5s

0-60 mph

87.6 mph

Top Speed

Best For

Track10%

City55%

Cornering40%

Daily Riding55%

Touring50%

Passenger40%

Rider Profile

Best For	This low-powered, restricted-output boxer suits beginner and learner-permit riders easing into motorcycling.
Purpose	It was built as a detuned, learner-legal version of the R 45 to meet reduced-power licensing rules of its era rather than to deliver strong performance.
Rider Fit	The modest 206 kg weight and low seat height typical of the R-series boxer make it manageable for riders of smaller stature or limited strength.
Character	It has the classic unhurried, low-vibration boxer character with shaft-drive smoothness rather than any sporty urgency.
Not Ideal For	This bike is not for riders seeking strong acceleration, high top speed, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.