1961 Triumph Bonneville T1 20

Triumph announced the ultimate expression of Barrra turner's 650cc pre unit twin in september 1961 ready for the 1961 season. named the bonneville in recognition of triumph's record breaking success at the salt flats of the same name, the new machine replaced the tiger 110 at the head of the sporting triumph range.

Model ID
Manufacturer (Make)Triumph
Model NameBonneville T1 20
Engine Capacity (Displacement)744 ccm (45.4 cubic inches)
Engine TypeTwin
Bore x StrokeØ76.0 mm x 82.0 mm (Ø2.99 inches x 3.23 inches)
Bore/Stroke Ratio0.93
Valves per Cylinder2
Timing SystemOHV
Cooling SystemAir
Gearbox5 speed
Front BrakesDual disc
Rear BrakesSingle disc
Front Tire100/90-19
Rear Tire110/90-18
Curb Weight192 kg (423 lb)
Fuel Capacity 18 litres (4.76 gallons)
Max Power49.00 HP (35.8 kW) at 6500 RPM
Power/Weight Ratio0.26 Hp/Kg
Top Speed161 km/h (100mph)
Acceleration (dart, speedup) time
0-100 km/h5.5 seconds
0-60 mph5.2 seconds
  • 1/4 mile
  • -
  • 60 to 140 km/h, highest gear
  • -

    1961 Triumph Bonneville T1 20 Reviewed by Barra Khatab On Monday, February 8, 2010, at 8:00 AM Rating: 5
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