What category is the 1981 Yamaha RD 250 (reduced Effect)?

The 1981 Yamaha RD 250 (reduced Effect) has a Category of Sport.

What is the engine size of the 1981 Yamaha RD 250 (reduced Effect)?

The 1981 Yamaha RD 250 (reduced Effect) has a Capacity: of 247.00 ccm (15.07 cubic inches).

What type of engine does the 1981 Yamaha RD 250 (reduced Effect) have?

The 1981 Yamaha RD 250 (reduced Effect) has a Engine type of Twin.

What is the engine power of the 1981 Yamaha RD 250 (reduced Effect)?

The 1981 Yamaha RD 250 (reduced Effect) has a Power of 27.00.

Is the 1981 Yamaha RD 250 (reduced Effect) air cooled or liquid cooled?

The 1981 Yamaha RD 250 (reduced Effect) has a Cooling system of Liquid.

How many gears does the 1981 Yamaha RD 250 (reduced Effect) have?

The 1981 Yamaha RD 250 (reduced Effect) has a Gearbox of 6-speed.

How much does the 1981 Yamaha RD 250 (reduced Effect) weigh?

The 1981 Yamaha RD 250 (reduced Effect) has a Weight incl. oil, gas, etc of 158.0 kg (348.3 pounds).

What is the top speed of the 1981 Yamaha RD 250 (reduced Effect)?

The 1981 Yamaha RD 250 (reduced Effect) has a Top speed of 149.0 km/h (92.6 mph).

Yamaha RD 250 (reduced Effect) - 1981 Specifications and Reviews

Name: 1981 Yamaha RD 250 (reduced Effect)
Brand: Yamaha

The 1981 Yamaha RD 250 is a lightweight sport bike ideal for novice and intermediate riders seeking an affordable, manageable entry into two-stroke performance. Its 247cc liquid-cooled twin-cylinder engine delivers accessible power while maintaining excellent fuel efficiency. Best known for its nimble handling and reliable six-speed transmission, the RD 250 excels as a practical commuter and weekend pleasure machine.

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1981

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Yamaha RD 250 (reduced Effect) 1981 19599 Thumb

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General information
Category	Sport
Year	1981
Model	Yamaha RD 250 (reduced effect)

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Fuel control	Membrane
Bore x stroke	54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression	6.2:1
Power	27.00
Stroke	2
Engine type	Twin
Capacity:	247.00 ccm (15.07 cubic inches)

Physical measures and capacities
Weight incl. oil, gas, etc	158.0 kg (348.3 pounds)
Yamaha RD 250 (reduced Effect) dimensions and frame
Rear brakes	Expanding brake
Front brakes	Single disc
Rear tyre dimensions	3.50-18
Front tyre dimensions	3.00-18
Speed and acceleration
Top speed	149.0 km/h (92.6 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	17.00 litres (4.49 gallons)

Performance Profile & Rider Fit

27 hp

Peak Power

8.5s

0-60 mph

92.6 mph

Top Speed

Best For

Track55%

City65%

Cornering78%

Daily Riding45%

Touring35%

Passenger30%

Rider Profile

Best For	This is a fairly forgiving classic two-stroke, suited to riders who already understand peaky powerbands rather than absolute beginners.
Purpose	It is a lightweight sport machine built for spirited backroad riding rather than outright top speed or long-distance cruising.
Rider Fit	The low 158 kg weight and compact dimensions make it easy to manage for riders of average size and strength.
Character	It has the classic buzzy, revvy two-stroke twin character that rewards riding it hard and keeping the engine in its narrow power range.
Not Ideal For	It is not a good fit for riders wanting modern touring comfort, passenger-friendly ergonomics, or effortless low-rev torque.

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