Triumph T 120R Bonneville (1965)

The Triumph T120R Bonneville 650 is a classic motorcycle produced in 1965. This bike is powered by a four-stroke parallel twin engine with an OHV, delivering a capacity of 649cc and a compression ratio of 8.5:1. It features two Amal carburetors and Lucas MA6 alternator ignition. The bike has a maximum power of 34 kW at 6500 rpm, clutch with wet multi plates, and a four-speed constant mesh transmission. It has a chain drive, 106 links, and a single front downtube frame with a second bracing member running under the tank. The steering angle is 65 degrees, and it has telescopic forks and hydraulic damping front suspension, twin Girling dampers at the rear. It features an 8″ SLS drum front brake and a 7″ SLS drum rear brake. The bike comes with 3.25 x 19 Dunlop Universal front tires and 4.00 x 18 Dunlop Universal rear tires. The Triumph T120R Bonneville 650 is 2020 mm long, 720 mm wide, 1403 mm in wheelbase, and has a seat height of 775 mm. The bike has a ground clearance of 127 mm and a dry weight of 165 kg. The fuel capacity of the bike varies, with the US model having a capacity of 13.6 L, while others have 18 L. The Triumph T120R Bonneville 650 is an iconic motorcycle that’s still admired to this day.

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Technical specifications:

Make Model: Triumph T120R Bonneville 650

Year: 1965

Engine: Four stroke, parallel twin, OHV

Capacity: 649 cc / 39.6 cu in

Bore x Stroke: 71 x 82 mm

Compression Ratio: 8.5:1

Cooling System: Air cooled

Induction: 2 x Amal 1 – 1/6″ carburetors

Ignition: Lucas MA6 alternator with 2 coils

Starting: Kick

Max Power: 34 kW / 46 hp @ 6500 rpm

Clutch: Wet, multiplate

Transmission: 4 Speed, constant mesh

Final Drive: Chain, 106 links

Gear Ratios: 1st 11.80 / 2nd 8.17 / 3rd 6.76 / 4th 5.84:1

Frame: Single front downtube, second bracing member running under tank

Steering Angle: 65o

Front Suspension: Telescopic forks, hydraulic damping

Rear Suspension: Swingarm, twin Girling dampers

Front Brakes: 8″ SLS drum

Rear Brakes: 7″ SLS drum

Front Tyre: 3.25 x 19, Dunlop Universal

Rear Tyre: 4.00 x 18, Dunlop Universal

Dimensions: Length 2020 mm / 85.5 in Width 720 mm / 28.5 in

Wheelbase: 1403 mm / 55.2 in

Seat Height: 775 mm / 30.5 in

Ground Clearance: 127 mm / 5.0 in

Dry Weight: 165 kg / 363 lbs

Fuel Capacity: US: 13.6 L / 3.6 US gal / 3 Imp gal / UK and other Export: 18 L / 4.8 US gal / 4 Imp gal