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1968 Triumph Bonneville T120R Roadster

Triumph Bonneville T120R Roadster 1968


1968 Triumph Bonneville T120R Roadster specifications, pictures, reviews and rating

1968 Triumph Bonneville T120R Roadster
1968 Triumph Bonneville T120R Roadster. Picture credit Triumphmotorcycles.typepad.com. Submit more pictures.
 
1968 Triumph Bonneville T120R Roadster
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General information
ModelTriumph Bonneville T120R Roadster
Year1968
CategorySport
Rating 3.6  Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike.
Engine and transmission
Displacement649.0 ccm (39.60 cubic inches)
Engine typeTwin, four-stroke
Power46.0 HP (33.6 kW)) @ 6500 RPM
Top speed185.0 km/h (115.0 mph)
Compression9.0:1
Bore x stroke71.0 x 82.0 mm (2.8 x 3.2 inches)
Fuel systemCarburettor. Amal Concentric carburettor
Fuel controlOverhead Valves (OHV)
IgnitionLucas
Cooling systemAir
Gearbox4-speed
Transmission typeChain   (final drive)
ClutchMulti-plate, wet
Chassis, suspension, brakes and wheels
Frame typeBrazed lug, full-cradle, single downtube
Rake (fork angle)26.0°
Front suspensionTelescopic fork, hydraulic damping.
Rear suspensionSwing arm, 2 Girling dampers
Front tire3.25-19
Rear tire4.00-18
Front brakesExpanding brake (drum brake). Twin Leading Shoe
Diameter203 mm (8.0 inches)
Rear brakesExpanding brake (drum brake)
Diameter178 mm (7.0 inches)
WheelsWire spoked. Dunlop tyres.
SeatDual seat, black and gray
Physical measures and capacities
Dry weight165.0 kg (363.8 pounds)
Power/weight ratio0.2788 HP/kg
Seat height775 mm (30.5 inches) If adjustable, lowest setting.
Ground clearance127 mm (5.0 inches)
Wheelbase1403 mm (55.2 inches)
Fuel capacity9.46 litres (2.50 US gallons)
Other specifications
Color optionsRed
StarterKick
InstrumentsSmiths Magnetic gauges
Electrical12-volt electrical system
Update specsReport missing specs or required updates.
Further information
MaintenanceFind parts, fluids. filters, maintenance tools and service manuals at Amazon.com.
Ask questionsJoin the 68 Triumph Bonneville T120R Roadster discussion group or the general Triumph discussion group.
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Rating sample for this Triumph bike
Reliability for the 1968 Triumph Bonneville T120R Roadster:

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