Bonneville T120 (Pre-Unit)
(1959 - 1962)
The Bonneville would be Edward Turner's last Triumph, and most consider it to be his best design.
It debuted in 1958 but production didn't start until 1959. The Bonneville was powered by Triumph's famous 650-cc parallel-twin, with a pair of Amal carburetors rather than just a single carb.
The 650s were converted to unit construction in 1963, which resulted in a more compact design. An improved frame was also introduced at this time.
Profile created by Laurence Mee on 19/12/2007.
Last edited by Laurence Mee on 20/01/2013.
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|Bore x Stroke:||71mm x 82mm|
|Max. Power:||46bhp @ 6500rpm|
|Frame:||Tubular twin cradle|
|Front Tyre:||3.25 x 19|
|Rear Tyre:||3.5 x 18|
|Front Brakes:||8in single leading shoe drum|
|Rear Brakes:||7in single leading shoe drum|