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1984

AMEX 250 J

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MotoLibrary Score
42 /100 Commuter
Power
23 HP
Top Speed
141 km/h
Engine
239 ccm

1984 Moto Morini AMEX 250 J Technical Analysis & Specification Breakdown

Built around Moto Morini's motorcycle platform, the 1984 Moto Morini AMEX 250 J pairs a 239 cc (14.6 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 23 HP (16.8 kW) at 8,800 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 96.2 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the AMEX 250 J measures 145 kg (320 lbs) wet (curb), translating to a power-to-weight ratio of 0.16 HP/kg (6.3 kg per horsepower). The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 141 km/h (88 mph).

Within MotoLibrary's Moto Morini archive, this model family spans 6 indexed model years from 1980 to 1985, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
96.2 HP/L
Power-to-Weight
0.16 HP/kg (6.3 kg/HP)
Engine
Displacement 239.0 ccm (14.58 cubic inches)
Engine Type V2, four-stroke
Engine Details V2, four-stroke
Power 23.0 HP (16.8 kW)) @ 8800 RPM
Compression 11.7:1
Bore x Stroke 59.0 x 43.8 mm (2.3 x 1.7 inches)
Valves/Cylinder 2
Fuel Control Overhead Valves (OHV)
Cooling Air
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Performance
Top Speed 141.0 km/h (87.6 mph)
Wheels & Brakes
Front Tyre 2.75-18
Rear Tyre 3.25-18
Front Brakes Single disc
Rear Brakes Expanding brake
Dimensions & Weight
Weight incl. 145.0 kg (319.7 pounds)
Fuel Capacity 13.00 litres (3.43 US gallons)
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Transmission
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Beginner
A2 license compatible, manageable power.
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