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Classic · 1970

Trophy 250

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MotoLibrary Score
41 /100 Commuter
Power
22 HP
Top Speed
130 km/h
Engine
247 ccm

1970 Triumph Trophy 250 Technical Analysis & Specification Breakdown

Built around Triumph's classic motorcycle platform, the 1970 Triumph Trophy 250 utilizes a 247 cc (15.1 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 22 HP (16.1 kW) at 8,000 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 89.1 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 Trophy 250 measures 151 kg (333 lbs) wet (curb), translating to a power-to-weight ratio of 0.15 HP/kg (6.86 kg per horsepower). The 13.5-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 130 km/h (81 mph).

Specific Output
89.1 HP/L
Power-to-Weight
0.15 HP/kg (6.86 kg/HP)
Engine
Displacement 247.0 ccm (15.07 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 22.0 HP (16.1 kW)) @ 8000 RPM
Compression 10.0:1
Bore x Stroke 67.0 x 70.0 mm (2.6 x 2.8 inches)
Valves/Cylinder 2
Fuel Control Overhead Valves (OHV)
Cooling Air
Transmission
Gearbox 4-speed
Final Drive Chain (final drive)
Performance
Top Speed 130.0 km/h (80.8 mph)
Wheels & Brakes
Front Tyre 3.25-19
Rear Tyre 4.00-18
Front Brakes Expanding brake
Rear Brakes Expanding brake
Dimensions & Weight
Weight incl. 151.0 kg (332.9 pounds)
Fuel Capacity 13.50 litres (3.57 US gallons)
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Beginner
A2 license compatible, manageable power.
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