Triumph T120 Bonneville (1966-67)

The Triumph T120R Bonneville 650 was a motorcycle model produced from 1966 to 1967. Its engine was a four-stroke, parallel twin, OHV with a capacity of 649cc or 39.6 cubic inches. It had 2 Amal 1-1/6″ carburetors, a Lucas MA6 alternator with 2 coils, and a kickstart. The max power output was 34 kW or 46 hp at 6500 RPM, and it had a wet, multiplate clutch and a four-speed constant mesh transmission with a chain final drive. The frame featured a single front downtube with a second bracing member running under the tank and a steering angle of 65°. The front suspension was telescopic forks with hydraulic damping, and the rear suspension was a swingarm with twin Girling dampers. Both front and rear brakes were SLS drum brakes, with the front being 8″ and the rear being 7″. The motorcycle had Dunlop Universal tires, with the front being 3.25 x 19 and the rear being 4.00 x 18. Its dimensions were length 2020 mm or 85.5 in, width 720 mm or 28.5 in, wheelbase 1403 mm or 55.2 in, seat height 775 mm or 30.5 in, ground clearance 127 mm or 5.0 in, and dry weight 165 kg or 363 lbs. The fuel capacity varied by region, with the US having 13.6 L or 3.6 US gallons, and the UK and other export markets having 18 L or 4.8 US gallons.

Technical specifications:

Make Model: Triumph T120R Bonneville 650