
Classic motorcycle head-to-head
Benelli 750 Sei vs Triumph Bonneville T140
Benelli 750 Sei scores 82/100 overall against Triumph Bonneville T140 on 81/100. On the road: 68–72. As classics: 95–90. Overall result: Benelli 750 Sei.


Photo: Classic & Classy Motorcycles Ltd · Owned by Classic & Classy Motorcycles Ltd
Triumph Bonneville T140
The numbers
Category-by-category result
| Category | Benelli 750 Sei | Triumph T140 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 8 | 7 | Benelli 750 Sei |
| HandlingSteering, stability, weight and real-road manners. | 7 | 8 | Triumph T140 |
| BrakingDirect comparison of real stopping ability without an age allowance. | 8 | 7 | Benelli 750 Sei |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 6 | 6 | Level |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 5 | 8 | Triumph T140 |
| ComfortRiding position, vibration and suitability for longer journeys. | 7 | 7 | Level |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 9 | 9 | Level |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 9 | Benelli 750 Sei |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 9 | 8 | Benelli 750 Sei |
| CharacterSound, feel, personality and memorable riding experience. | 10 | 10 | Level |
Choose the Benelli 750 Sei if…
you want the world's first production six-cylinder motorcycle, with exotic styling, sound and rarity.
Choose the Triumph T140 if…
you want classic Bonneville character with 750cc torque, disc brakes and more everyday usability than earlier versions.
Background
History
Benelli 750 Sei
The Benelli 750 Sei was produced from 1974–1978 and used a 747cc air-cooled inline six. Within this comparison library it stands out particularly for historic importance, character, styling. 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.
Interesting details
Did you know?
Benelli 750 Sei
- Its production span in this library runs from 1974 to 1978.
- The recorded engine description is: 747cc air-cooled inline six.
- Its strongest comparison scores are historic importance, character, styling.
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.
Present-day appeal
Collector notes
Benelli 750 Sei
Collector interest is strongest where condition, originality and correct period details support the identity of the Benelli 750 Sei. Its library score for historic importance 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.
Before you buy
Buying checks
Benelli 750 Sei
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- 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
Rivals to the Benelli 750 Sei
Rivals to the Triumph T140
Final result
The verdict
Triumph Bonneville T140 wins the direct on-the-road comparison. Benelli 750 Sei wins the classic-motorcycle comparison. Benelli 750 Sei takes the overall result after the road and classic scores are weighted equally.