Classic motorcycle head-to-head

Triumph Bonneville T120 vs Triumph Bonneville T140

Triumph Bonneville T120 scores 82/100 overall against Triumph Bonneville T140 on 81/100. On the road: 65–72. As classics: 98–90. Overall result: Triumph Bonneville T120.

The numbers

Category-by-category result

CategoryTriumph BonnevilleTriumph T140Advantage
road
PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field.67Triumph T140
HandlingSteering, stability, weight and real-road manners.88Level
BrakingDirect comparison of real stopping ability without an age allowance.57Triumph T140
ReliabilityEngine, electrics and general dependability when properly maintained.66Level
Ease of ownershipMaintenance, parts supply and access to specialist knowledge.88Level
ComfortRiding position, vibration and suitability for longer journeys.67Triumph T140
classic
StylingDesign quality, visual presence and period appeal.109Triumph Bonneville
Historical importanceInfluence on motorcycling and importance within its era.109Triumph Bonneville
Collector appealLong-term desirability among classic motorcycle enthusiasts.98Triumph Bonneville
CharacterSound, feel, personality and memorable riding experience.1010Level

Choose the Triumph Bonneville if…

you value lightness, accessible mechanical simplicity and the sound and feel of a classic British twin.

Choose the Triumph T140 if…

you want classic Bonneville character with 750cc torque, disc brakes and more everyday usability than earlier versions.

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Background

History

Triumph Bonneville

The Triumph Bonneville T120 was produced from 1959–1973 and used a 649cc air-cooled parallel twin. Within this comparison library it stands out particularly for styling, historic importance, character. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.

Triumph T140

The Triumph Bonneville T140 was produced from 1973–1983 and used a 744cc air-cooled parallel twin. Within this comparison library it stands out particularly for character, styling, historic importance. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.

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Interesting details

Did you know?

Triumph Bonneville

  • Its production span in this library runs from 1959 to 1973.
  • The recorded engine description is: 649cc air-cooled parallel twin.
  • Its strongest comparison scores are styling, historic importance, character.

Triumph T140

  • Its production span in this library runs from 1973 to 1983.
  • The recorded engine description is: 744cc air-cooled parallel twin.
  • Its strongest comparison scores are character, styling, historic importance.
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Present-day appeal

Collector notes

Triumph Bonneville

Collector interest is strongest where condition, originality and correct period details support the identity of the Triumph Bonneville T120. Its library score for styling is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.

Triumph T140

Collector interest is strongest where condition, originality and correct period details support the identity of the Triumph Bonneville T140. Its library score for character is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.

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Before you buy

Buying checks

Triumph Bonneville

  • Confirm the frame and engine identity match the advertised model and year.
  • Check cold starting, smoke, oil leaks and unusual mechanical noise.
  • Check vibration-related fasteners, primary drive condition and signs of persistent oil leakage.
  • Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
  • Verify that important model-specific parts have not been replaced with incorrect later components.
  • Review the paperwork, ownership history and any restoration invoices before purchase.

Triumph T140

  • Confirm the frame and engine identity match the advertised model and year.
  • Check cold starting, smoke, oil leaks and unusual mechanical noise.
  • Check vibration-related fasteners, primary drive condition and signs of persistent oil leakage.
  • Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
  • Verify that important model-specific parts have not been replaced with incorrect later components.
  • Review the paperwork, ownership history and any restoration invoices before purchase.

Period opposition

Historic rivals

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Final result

The verdict

Triumph Bonneville T140 wins the direct on-the-road comparison. Triumph Bonneville T120 wins the classic-motorcycle comparison. Triumph Bonneville T120 takes the overall result after the road and classic scores are weighted equally.

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