Triumph T120V Bonneville (1974)

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The Triumph T120V Bonneville (1974) is a vintage motorcycle with a four stroke, parallel twin, OHV engine and a capacity of 649cc. It has a compression ratio of 9.0:1 and cooling system that uses air. The ignition is battery operated and coil powered and the bike starts using a kick. The Bonneville has a 12V alternator for lighting and an oil system that includes a double plunger pump and dry sump. The clutch is a multi-disc, wet model and the bike boasts a maximum power of 37.3 kW / 50 hp @ 7000 rpm and a maximum torque of 52.1 Nm / 5.3 kgf-m / 38.5 lb-ft @ 6000 rpm. The transmission is four speed with a final drive using a chain. The front suspension is telescopic forks and the rear suspension is a swinging arm, dual shocks model. The Bonneville has drum brakes in the front and rear and uses 3.25 -19 and 4.00 -18 tires, respectively. The fuel capacity is 16L / 4.2 US gal / 3.5 Imp gal and the wet weight is 181 kg / 399 lbs. The classic bike has gear ratios of 4th at 4.95, 3rd at 6.14, 2nd at 8.36, and 1st at 12.08.

Technical specifications:

Make Model: Triumph Bonneville 650 T120V

Year: 1974


Engine: Four stroke, parallel twin, OHV
Capacity: 649 cc / 39.6 cu in
Bore x Stroke: 71 x 82 mm
Compression Ratio: 9.0:1
Cooling System: Air cooled
Induction: 2 x 30 mm Amal concentric carburetors
Ignition: Battery, coil
Starting: Kick
Lighting system: 12V alternator
Oil system.: Double plunger pump, dry sump
Oil capacity: 3.4 L / 7.2 US pt / 6 Imp pt
Clutch: Multi-disc, wet
Max Power: 37.3 kW / 50 hp @ 7000 rpm
Max Toque: 52.1 Nm / 5.3 kgf-m / 38.5 lb-ft @ 6000 rpm
Transmission: 4 Speed

Final Drive: Chain
Gear Ratios: 4th 4.95 / 3rd 6.14 / 2nd 8.36 / 1st 12.08
Front Suspension: Telescopic forks
Rear Suspension: Swinging arm, dual shocks
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 3.25 -19
Rear Tyre: 4.00 -18
Fuel Capacity: 16L / 4.2 US gal / 3.5 Imp gal
Wet Weight: 181 kg / 399 lbs

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