Back to Bike FinderYears: 1960 · 1959
1959Sportbike
Triumph T120 Bonneville
Key specifications
Engine
649 cc
Power
46 HP
Weight
183 kg
Fuel type
petrol
Fuel capacity
4.0 L
Transmission
4-speed
Seat height
30 mm
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)
Technical details
Source specification data
- Make
- Triumph
- Model
- T120 Bonneville
- Category
- Sport
- Color Options
- Pearl Grey/Tangerine Orange
- Power
- 46.00 HP (33.6 kW)) @ 6700 RPM
- Clutch
- Multi-plate, wet
- Gearbox
- 4-speed
- Ignition
- Lucas Magneto
- Top Speed
- 185.0 km/h (115.0 mph)
- Fuel System
- Carburettor. Amal monobloc carburettor
- Bore X Stroke
- 71.0 x 82.0 mm (2.8 x 3.2 inches)
- Displacement
- 649.00 ccm (39.60 cubic inches)
- Cooling System
- Air
- Engine Details
- Twin, four-stroke
- Transmission Type Final Drive
- Chain
- Dry Weight
- 183.0 kg (403.4 pounds)
- Seat Height
- 770 mm (30.3 inches) If adjustable, lowest setting.
- Fuel Capacity
- 15.14 litres (4.00 gallons)
- Ground Clearance
- 127 mm (5.0 inches)
- Power Weight Ratio
- 0.2514 HP/kg
- Seat
- Dual seat
- Rear Tyre
- 3.50-19
- Frame Type
- Brazed lug, rigid
- Front Tyre
- 3.25-19
- Rear Brakes
- Expanding brake (drum brake)
- Front Brakes
- Expanding brake (drum brake)
- Rear Suspension
- Twin
- shocks.
- Girlings
- 100 lb/ft spring tension, adjustable pre-set.
- Front Suspension
- Telescopic fork.
- Rear Brakes Diameter
- 178 mm (7.0 inches)
- Front Brakes Diameter
- 203 mm (8.0 inches)
Available colors
Pearl Grey/Tangerine Orange