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Enduro - Offroad · 1981

XT 250 (reduced effect)

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MotoLibrary Score
38 /100 Commuter
Power
17 HP
Top Speed
112 km/h
Engine
249 ccm

1981 Yamaha XT 250 (reduced effect) Technical Analysis & Specification Breakdown

Built around Yamaha's enduro - offroad motorcycle platform, the 1981 Yamaha XT 250 (reduced effect) utilizes a 249 cc (15.2 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 17 HP (12.4 kW) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 68.3 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the XT 250 (reduced effect) measures 125 kg (276 lbs) wet (curb), translating to a power-to-weight ratio of 0.14 HP/kg (7.35 kg per horsepower). The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 112 km/h (70 mph).

Specific Output
68.3 HP/L
Power-to-Weight
0.14 HP/kg (7.35 kg/HP)
Engine
Displacement 249.0 ccm (15.19 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 17.0 HP (12.4 kW)) @ 7500 RPM
Compression 9.2:1
Bore x Stroke 75.0 x 56.5 mm (3.0 x 2.2 inches)
Valves/Cylinder 2
Fuel Control Overhead Cams (OHC)
Cooling Air
Transmission
Gearbox 5-speed
Final Drive Chain (final drive)
Performance
Top Speed 112.0 km/h (69.6 mph)
Wheels & Brakes
Front Tyre 3.00-21
Rear Tyre 4.60-17
Front Brakes Expanding brake
Rear Brakes Expanding brake
Dimensions & Weight
Weight incl. 125.0 kg (275.6 pounds)
Fuel Capacity 8.00 litres (2.11 US gallons)
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Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🌲
Best For
Off-Road & Adventure
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