1973 Triumph T140 Bonneville
Born in 1973, the 1973 Triumph T140 Bonneville is a 744cc twin-cylinder standard motorcycle producing 49hp from Triumph.
Specifications
Engine
- Type
- OHV twin
- Displacement
- 744 cc
- Cylinders
- 2
- Power
- 49 hp @ 6200 rpm
- Torque
- 54.0 Nm
- Compression
- —
- Bore × Stroke
- 76.0 × 82.0 mm
- Cooling
- Air-cooled
- Fuel System
- 2x Amal carburetors
Chassis & Transmission
- Frame
- Steel single cradle
- Front Suspension
- Telescopic fork
- Rear Suspension
- Twin shock
- Front Brake
- Single disc
- Rear Brake
- Drum
- Front Tyre
- —
- Rear Tyre
- —
- Transmission
- 5-speed
- Final Drive
- Chain
Performance
- Top Speed
- 175 km/h (109 mph)
- ¼ Mile
- —
Dimensions & Weight
- Dry Weight
- 185 kg (408 lbs)
- Wet Weight
- 198 kg (437 lbs)
- Seat Height
- 790 mm
- Wheelbase
- 1410 mm
- Ground Clearance
- —
- Fuel Capacity
- 14.0 L
History & Story
In 1973, Triumph launched the 1973 Triumph T140 Bonneville — a standard motorcycle that would come to define an era of motorcycling. Hailing from United Kingdom, it combined United Kingdom engineering with standard motorcycle appeal.
The 1973 Triumph T140 Bonneville is motivated by a 744cc OHV twin twin-cylinder unit delivering 49hp at 6200 rpm. Breathing through 2x Amal carburetors and kept cool by air-cooled, the engine drives through a 5-speed transmission with chain final drive.
The chassis employs a steel single cradle frame with telescopic fork up front and twin shock at the rear. Stopping power comes from single disc front and drum rear brakes. Tipping the scales at 185 kg (408 lbs) dry, the 1973 Triumph T140 Bonneville offers a manageable riding experience with a 1410 mm wheelbase.
Performance-wise, the 1973 Triumph T140 Bonneville achieves a claimed top speed of 175 km/h (109 mph). With a fuel capacity of 14.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 790 mm makes it comfortable for most riders.
Today, the 1973 Triumph T140 Bonneville is considered a respected classic that attracts serious collector interest and continues to appreciate. Parts availability is rated as good, making ownership relatively straightforward. It remains an icon of Triumph motorcycling from 1970s.
The 1973 Triumph T140 Bonneville is motivated by a 744cc OHV twin twin-cylinder unit delivering 49hp at 6200 rpm. Breathing through 2x Amal carburetors and kept cool by air-cooled, the engine drives through a 5-speed transmission with chain final drive.
The chassis employs a steel single cradle frame with telescopic fork up front and twin shock at the rear. Stopping power comes from single disc front and drum rear brakes. Tipping the scales at 185 kg (408 lbs) dry, the 1973 Triumph T140 Bonneville offers a manageable riding experience with a 1410 mm wheelbase.
Performance-wise, the 1973 Triumph T140 Bonneville achieves a claimed top speed of 175 km/h (109 mph). With a fuel capacity of 14.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 790 mm makes it comfortable for most riders.
Today, the 1973 Triumph T140 Bonneville is considered a respected classic that attracts serious collector interest and continues to appreciate. Parts availability is rated as good, making ownership relatively straightforward. It remains an icon of Triumph motorcycling from 1970s.
Known Issues
- Oil leaks from primary chaincase
- Lucas electrics (nicknamed Prince of Darkness)
- Amal carburettor wear and jetting issues
Fun Facts
- The 1973 Triumph T140 Bonneville was produced in Triumph's United Kingdom facilities
- The 1973 Triumph T140 Bonneville featured a steel single cradle frame typical of 1970s design philosophy
Collector Information
- Parts Availability
- Good
- Collector Rating
- 7/10
Resources & Parts
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