| MODEL | TRIUMPH T 120R 650 BONNEVILLE 1965 |
| Year | 1965 |
| Engine Type | Four stroke, parallel twin, OHV |
| Displacement / Capacity | 649 cc |
| Bore X Stroke | 71 x 82 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Max Power | 34 kW / 46 hp @ 6500 rpm |
| Max Torque | — |
| Ignition | Lucas alternator with 2 coils |
| Induction | 2 x Amal carburettors |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 speed, constant mesh |
| Clutch | Wet, multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single front downtube |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swingarm, twin Girling dampers |
| Front Brakes | 8" SLS drum |
| Rear Brakes | 7" SLS drum |
| DIMENSION SPECS | |
| Overall Length | 2020 mm |
| Overall Width | 720 mm |
| Overall Height | — |
| Seat Height | 775 mm |
| Wheelbase | 1403 mm |
| Ground Clearance | 127 mm |
| Dry Weight | 165 kg |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25 x 19, Dunlop Universal |
| Rear Tyre | 4.00 x 18, Dunlop Universal |
| FUEL SYSTEM | |
| Fuel Capacity | 13.6 Litres (US); 18 Litres (UK and export) |
| Fuel Consumption | — |
| Top Speed | — |
The T120R was the 1965 Bonneville, built on the stiffer frame introduced in 1963. It kept the 650 twin with twin Amal carburettors and drum brakes, and tyres returned to a 19 inch front and 18 inch rear.
