Triumph T120 Bonneville 1960

Complete specifications and details for the 1960 Triumph T120 Bonneville. This comprehensive guide includes engine specifications, dimensions, features, and performance data.

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Basic Information

MakeTriumph
ModelT120 Bonneville
Year1960
CategorySport

Chassis, Suspension & Brakes

Frame TypeDuplex frame
Front BrakesExpanding brake (drum brake)
Front Brakes Diameter203 mm (8.0 inches)
Front SuspensionTelescopic fork.
Front Tyre3.25-18
Rear BrakesExpanding brake (drum brake)
Rear Brakes Diameter178 mm (7.0 inches)
Rear SuspensionTwin shocks. Girlings 100 lb/ft spring tension, adjustable pre-set.
Rear Tyre3.50-18
SeatDual seat

Other Specifications

Color OptionsPearl Grey/Azure Blue
ElectricalAC Alternator

Engine & Transmission

Displacement649.00 ccm (39.60 cubic inches)
Engine DetailsTwin, four-stroke
Power46.00 HP (33.6 kW)) @ 6700 RPM
Top Speed185.0 km/h (115.0 mph)
Bore X Stroke71.0 x 82.0 mm (2.8 x 3.2 inches)
Fuel SystemCarburettor. Amal monobloc carburettor
IgnitionLucas K2F auto-advance Magneto
Cooling SystemAir
Gearbox4-speed
Transmission Type Final DriveChain
ClutchMulti-plate, wet

Dimensions & Capacities

Dry Weight178.0 kg (392.4 pounds)
Fuel Capacity15.14 litres (4.00 gallons)
Ground Clearance127 mm (5.0 inches)
Power Weight Ratio0.2584 HP/kg
Seat Height770 mm (30.3 inches) If adjustable, lowest setting.