| Attribute | Value |
| General |
| Production from | 1963 year |
| Make | Triumph |
| Model | Triumph Bonneville T120R Roadster |
| Category | Sport |
| Engine and transmission |
| Engine type | Twin, four-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor. Amal monobloc carburettor |
| Engine details | Add |
| Displacement | 649 cm³ |
| Power | 33.6 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Air |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 71 mm |
| Stroke | 82 mm |
| Gearbox | 4-speed |
| Greenhouse gases | Add |
| Fuel control | Overhead Valves (OHV) |
| Emission details | Add |
| Driveline | Add |
| Ignition | Lucas K2F auto-advance Magneto |
| Clutch | Multi-plate, wet |
| Lubrication system | Add |
| Compression | 8.5:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Telescopic fork, hydraulic damping. |
| Rear suspension | Swing arm, 2 Girling dampers |
| Front brakes | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 178 mm |
| Frame type | Brazed lug, full-cradle, single downtube |
| Front tyre | 3.25-18 |
| Rear tyre | 3.50-18 |
| Seat | Dual seat |
| Wheels | Wire spoked |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | 26 degree |
| Other |
| Battery capacity | Add |
| Starter | Kick |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,403 mm |
| Kerb weight | Add |
| Dry weight | 165 kg |
| Power/weight ratio | 0.2036 |
| Overall height | Add |
| Overall length | Add |
| Overall width | Add |
| Seat height | 775 mm |
| Alternate seat height | Add |
| Ground clearance | 127 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 185 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 15.14 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |