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Motorcycles / Triumph / Bonneville T120

Motorcycle museum record

Bonneville T120

Named for Triumph’s speed-record association with the Bonneville Salt Flats, the T120 combined the British parallel twin with a sporting transatlantic image.

Triumphmanufacturer
classiccategory
649 ccengine capacity
Air-cooled parallel twinengine

Museum plaque

Why this bike belongs here.

The quintessential classic Triumph and a central object in café-racer, custom and popular motorcycle culture.

Named for Triumph’s speed-record association with the Bonneville Salt Flats, the T120 combined the British parallel twin with a sporting transatlantic image.

Why it matters. The quintessential classic Triumph and a central object in café-racer, custom and popular motorcycle culture.

Technical identity

The engineering at a glance.

This first expansion records museum-level specifications rather than pretending every year and market used one immutable specification.

EngineAir-cooled parallel twin
Capacity649 cc
Production era1959–1975
CategoryClassic
TransmissionAdd by variant/year
Final driveAdd by variant/year

Research starting point

Built to improve, not freeze.

Model-year specifications can vary. The museum keeps the stable historical interpretation here and leaves room to add exact variants, racing derivatives, engine codes and source-specific specifications later.

Triumph source / heritage starting point
Open source ↗