Triumph T120R Bonneville 650 (1969) vs Triumph T120 Bonneville 650 (1963-64)

Comparison technical specifications

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Make:	Triumph	Triumph
Model:	T120R Bonneville 650	T120 Bonneville 650
Years:	1969	1963-64
Engine:	Four stroke, parallel twin, OHV	Four stroke, parallel twin, OHV
Capacity:	649 cc / 39.6 cu in	649 cc / 39.6 cu in
Bore x Stroke:	71 x 82 mm	71 x 82 mm
Compression Ratio:	8.5:1	8.5:1
Cooling System:	Air cooled	Air cooled
Induction:	2 x Amal 1 - 1/6" carburetors	2 x Amal 1 - 1/6" carburetors
Ignition:	Lucas MA6 alternator with 2 coils	Lucas MA6 alternator with 2 coils
Starting:	Kick	Kick
Max Power:	34 kW / 46 hp @ 6500 rpm	34 kW / 46 hp @ 6500 rpm
Clutch:	Wet, multiplate	Wet, multiplate
Transmission:	4 Speed, constant mesh	4 Speed, constant mesh
Final Drive:	Chain, 106 links	Chain, 106 links
Gear Ratios:	1st 11.80 / 2nd 8.17 / 3rd 6.76 / 4th 5.84:1	1st 11.80 / 2nd 8.17 / 3rd 6.76 / 4th 5.84:1
Frame:	Single front downtube, second bracing member running under tank	Single front downtube, second bracing member running under tank
Steering Angle:	65o	65o
Front Suspension:	Telescopic forks, hydraulic damping	Telescopic forks, hydraulic damping
Rear Suspension:	Swingarm, twin Girling dampers	Swingarm, twin Girling dampers
Front Brakes:	8" SLS drum	8" SLS drum
Rear Brakes:	7" SLS drum	7" SLS drum
Front Tyre:	3.25 x 19, Dunlop Universal	3.25 x 18, Dunlop Universal
Rear Tyre:	4.00 x 18, Dunlop Universal	3.50 x 18, Dunlop Universal
Wheelbase:	1403 mm / 55.2 in	1403 mm / 55.2 in
Seat Height:	775 mm / 30.5 in	775 mm / 30.5 in
Ground Clearance:	127 mm / 5.0 in	127 mm / 5.0 in
Dry Weight:	165 kg / 363 lbs	165 kg / 363 lbs
Fuel Capacity:	13.6 Litres / 3.6 US gal other Export: 18 Litres / 4.8 US gal	US: 13.6 L / 3.6 US gal / 3 Imp gal / UK and other Export: 18 L / 4.8 US gal / 4 Imp gal