Triumph 6T Thunderbird

Triumph 6T Thunderbird 1949

Key facts

  • Year

    1949

  • Country

    Great Britain

  • Capacity

    649cc

  • Cylinders

    2

  • Valves

    Overhead valve

  • Output

    34bhp at 6,300rpm

  • Performance

    100mph/160.93kph

  • Price new

    £195

  • Owner

    National Motor Museum Trust

  • Manufacturer

    Triumph Engineering Co. Ltd

The 650cc model 6T or Thunderbird was Triumph’s answer to an increasing demand for faster and more powerful motorcycles for the important American export market. This bike was one of a team of three machines used to cover 500 miles at over 90mph during pre-launch demonstrations at the famous French Montlhéry circuit during September 1949.

Based on the popular 500cc Speed Twin model, the Thunderbird was developed by Triumph Chief Designer Edward Turner as a true 100mph machine. The bike was the first to include a headlamp built into a distinctive housing or nacelle that also incorporated the instruments and switches; a Triumph feature used during the 1950s and 60s. The Thunderbird remained in production until 1966 and was a popular choice with Police forces.

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Panoramic view of the first floor of the National Motor Museum

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