Triumph T 140 E Bonneville Special - 1980 Specifications and Reviews

The 1980 Triumph T 140 E Bonneville Special is a classic British naked bike that appeals to traditionalist riders seeking authentic retro character. Powered by an air-cooled 744cc parallel-twin engine producing 49 horsepower, it's best known for its lightweight handling and timeless styling. This model represents the final evolution of Triumph's iconic Bonneville lineage before the marque's decline.

1980
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General information

CategoryNaked bike
Year1980
ModelTriumph T 140 E Bonneville Special

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox5-speed
Cooling systemAir
Fuel controlOHV
Valves per cylinder2
Bore x stroke76.0 x 82.0 mm (3.0 x 3.2 inches)
Compression9.0:1
Power49.00
Stroke4
Engine typeTwin
Capacity:744.00 ccm (45.40 cubic inches)
 
 

Physical measures and capacities

Weight incl. oil, gas, etc200.0 kg (440.9 pounds)
 
 

Triumph T 140 E Bonneville Special dimensions and frame

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions4.10-18
Front tyre dimensions4.10-19

Speed and acceleration

Top speed160.0 km/h (99.4 mph)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity18.50 litres (4.89 gallons)

Performance Profile & Rider Fit

49 hp
Peak Power
7.5s
0-60 mph
99.4 mph
Top Speed

Best For

Track25%
City55%
Cornering60%
Daily Riding45%
Touring40%
Passenger35%

Rider Profile

Best ForBest suited to riders with some experience on classic-style twins, as the air-cooled parallel-twin and drum-era chassis roots reward smooth, deliberate inputs.
PurposeThis is a classic British roadster built for spirited backroad rides and weekend cruising rather than outright performance or long-distance touring.
Rider FitA moderate 200kg curb weight and upright seating make it manageable for riders of average build, though the kickstart-era ergonomics and narrow seat suit shorter rides best.
CharacterIt has the raw, torquey charm and mechanical honesty of a classic Bonneville, rewarding riders who enjoy vintage engineering over modern refinement.
Not Ideal ForThis is not the right bike for riders seeking high-speed touring comfort, modern electronics, or any kind of off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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