1977 Triumph T 140 V Bonneville

Specifications
- Category
- Classic
- Displacement
- 744.0 ccm (45.40 cubic inches)
- Power
- 49.0 HP (35.8 kW) @ 6500 RPM
- Top speed
- 177.0 km/h (110.0 mph)
The 1977 Triumph T 140 V Bonneville
The 1977 Triumph T 140 V Bonneville sits right at the heart of Triumph's twin-cylinder lineup, the standard-bearer for the parallel-twin format the factory had been refining for decades. This is a bike built for a rider who wants mechanical honesty over convenience: you feel the engine working through the frame, hear it through the pipes, and the five-speed gearbox rewards a deliberate hand rather than a lazy one. It's a machine suited to back roads and weekend runs rather than motorway slogs, where the torque delivery and chassis balance make more sense than raw top-end speed. Ownership means staying friendly with points, carbs, and pushrods.
The 1977 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1976 example should focus on mileage, service history, and condition rather than spec differences.
Buyers tend to be experienced riders or long-time British bike owners rather than newcomers, often stepping sideways from Japanese classics in search of more character. Given high collector interest in the T140V line, well-documented, unmolested examples increasingly get bought as much for future value as for weekend riding.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| Mar 26, 2025 | Modified 1976 Triumph Bonneville T140V | $5,700 | — | Bring a Trailer |
| Oct 21, 2024 | 1977 Triumph Bonneville Silver Jubilee Limited Edition | $6,800 | — | Bring a Trailer |
| May 8, 2022 | 1977 Triumph Bonneville T140V | $5,600 | — | Bring a Trailer |
| Jul 13, 2020 | Modified 1977 Triumph T140 Bonneville | $12,000 | — | Bring a Trailer |
| Apr 22, 2020 | 1977 Triumph Bonneville T140 | $10,500 | — | Bring a Trailer |