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Sport · 1966

G3 350

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MotoLibrary Score
36 /100 Commuter
Power
18 HP
Engine
347 ccm

1966 Matchless G3 350 Technical Analysis & Specification Breakdown

Built around Matchless's sport motorcycle platform, the 1966 Matchless G3 350 relies on a 347 cc (21.2 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 18 HP (13.1 kW) at 5,750 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 51.9 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

Within MotoLibrary's Matchless archive, this model family spans 19 indexed model years from 1949 to 1967, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
51.9 HP/L
Engine
Displacement 347.0 ccm (21.17 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Power 18.0 HP (13.1 kW)) @ 5750 RPM
Compression 6.5:1
Bore x Stroke 69.0 x 93.0 mm (2.7 x 3.7 inches)
Fuel System Carburettor. Amal
Cooling Air
Transmission
Final Drive Chain (final drive)
Clutch Wet multiplate
Chassis
Front Suspension Telescopic
Rear Suspension Two schock
Wheels & Brakes
Front Brakes Expanding brake (drum brake)
Rear Brakes Expanding brake (drum brake)
Wheels Spoked
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Power
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Brakes
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Suspension
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Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏁
Best For
Sport & Track
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