Triumph 650cc Thunderbird ,
Lot 230
1963 Triumph 646cc Thunderbird Frame no. DN858 Engine no. 6T DU858
Sold for £3,795 (US$ 6,378) inc. premium
Lot Details
1963 Triumph 646cc Thunderbird
Registration no. 63-WW-502 (ROI)
Frame no. DN858
Engine no. 6T DU858
One of the most important developments in the history of Triumph's long-running parallel twin was the introduction of unitary construction of the engine and gearbox in 1957, commencing with the 350cc 'Twenty-One' (later 3TA). The 500s went unitary the following year but it was not until 1962 that this more modern form of construction was extended to the 650s. A new alloy cylinder head was adopted at the same time and the engine/gearbox unit went into a new single-downtube frame with bolt-on rear sub-frame. Three 650s were offered initially: the Thunderbird tourer, Trophy trail bike and Bonneville sports roadster. Benefiting from considerable recent expenditure with engineering specialists SRM, this early 'unit' Thunderbird is offered with dating certificate, Vehicle Registration Certificate and expired tax disc (March 1995). Harry says that it 'goes well'.

Saleroom notices

  • There is no Dating certificate with the machine.
Activities
Contacts
  1. Ben Walker
    Specialist - Motorcycles
    Bonhams
    Work
    101 New Bond Street
    London, W1S 1SR
    United Kingdom
    Work +44 20 8963 2819
    FaxFax: +44 20 8963 2801