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General information |
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Model
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Triumph T120 Bonneville |
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Year model
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1959 |
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Type
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Sport |
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Rating
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3.2 Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike. |
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Engine and transmission |
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Engine size
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649.0 ccm (39.60 cubic inches) |
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Type of engine
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Twin, four-stroke |
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Effect
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46.0 HP (33.6 kW)) @ 6700 RPM |
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Top speed
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185.0 km/h (115.0 mph) |
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Bore x stroke
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71.0 x 82.0 mm (2.8 x 3.2 inches) |
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Fuel system
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Carburettor. Amal monobloc carburettor |
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Fuel control
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Overhead Valves (OHV) |
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Ignition
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Lucas magneto |
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Cooling system
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Air |
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Gearbox
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4-speed |
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Transmission type
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Chain (final drive) |
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Clutch
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Multi-plate, wet |
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Chassis, suspension, brakes and wheels |
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Frame type
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Brazed lug, rigid |
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Front suspension
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Telescopic fork. |
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Rear suspension
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Twin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set. |
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Front tire
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3.25-19 |
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Rear tire
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3.50-19 |
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Front brakes
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Expanding brake (drum brake) |
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Diameter
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203 mm (8.0 inches) |
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Rear brakes
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Expanding brake (drum brake) |
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Diameter
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178 mm (7.0 inches) |
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Seat
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Dual seat |
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Physical measures and capacities |
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Dry weight
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183.0 kg (403.4 pounds) |
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Power/weight ratio
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0.2514 HP/kg |
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Seat height
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770 mm (30.3 inches) If adjustable, lowest setting. |
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Ground clearance
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127 mm (5.0 inches) |
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Wheelbase
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1400 mm (55.1 inches) |
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Fuel capacity
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15.14 litres (4.00 US gallons) |
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Other specifications |
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Color options
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Pearl Grey/Tangerine Orange |
| Update specs | Report missing specs or required updates. |
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Further information |
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Ask questions | Join the 59 Triumph T120 Bonneville discussion group or the general Triumph discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Compare with another motorcycle |
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Rating sample for this Triumph bike
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Fun-factor for the 1959 Triumph T120 Bonneville:
 (82.3 out of 100)
Click here for complete rating. You can also compare bikes.
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