1968 Triumph Bonneville T120R Roadster. Picture credit Triumphmotorcycles.typepad.com.
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| General information |
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| Model: | Triumph Bonneville T120R Roadster |
| Year: | 1968 |
| Category: | Sport |
| Rating: | 3.5 Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike. |
| Engine and transmission |
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| Displacement: | 649.0 ccm (39.60 cubic inches) |
| Engine type: | Twin, four-stroke |
| Power: | 46.0 HP (33.6 kW)) @ 6500 RPM |
| Top speed: | 185.0 km/h (115.0 mph) |
| Compression: | 9.0:1 |
| Bore x stroke: | 71.0 x 82.0 mm (2.8 x 3.2 inches) |
| Fuel system: | Carburettor. Amal Concentric carburettor |
| Fuel control: | Overhead Valves (OHV) |
| Ignition: | Lucas |
| Cooling system: | Air |
| Gearbox: | 4-speed |
Transmission type,
final drive: | Chain |
| Clutch: | Multi-plate, wet |
| Chassis, suspension, brakes and wheels |
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| Frame type: | Brazed lug, full-cradle, single downtube |
| Rake (fork angle): | 26.0° |
| Front suspension: | Telescopic fork, hydraulic damping. |
| Rear suspension: | Swing arm, 2 Girling dampers |
| Front tyre: | 3.25-19 |
| Rear tyre: | 4.00-18 |
| Front brakes: | Expanding brake (drum brake). Twin Leading Shoe |
| Diameter: | 203 mm (8.0 inches) |
| Rear brakes: | Expanding brake (drum brake) |
| Diameter: | 178 mm (7.0 inches) |
| Wheels: | Wire spoked. Dunlop tyres. |
| Seat: | Dual seat, black and gray |
| Physical measures and capacities |
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| Dry weight: | 165.0 kg (363.8 pounds) |
| Power/weight ratio: | 0.2788 HP/kg |
| Seat height: | 775 mm (30.5 inches) If adjustable, lowest setting. |
| Ground clearance: | 127 mm (5.0 inches) |
| Wheelbase: | 1403 mm (55.2 inches) |
| Fuel capacity: | 9.46 litres (2.50 gallons) |
| Other specifications |
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| Color options: | Red |
| Starter: | Kick |
| Instruments: | Smiths Magnetic gauges |
| Electrical: | 12-volt electrical system |
| Further information |
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| Ask questions | Join the 68 Triumph Bonneville T120R Roadster discussion group or the general Triumph discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Rating sample for this Triumph bike
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Reliability for the 1968 Triumph Bonneville T120R Roadster:
 (61.7 out of 100)
Click here for complete rating. You can also compare bikes.
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