Triumph Bonneville T120

Specifications

Production

1959–1975

Engine

air-cooled, ohv 360° parallel-twin

Compression ratio

8.5:1

Transmission

4-speed gearbox (and later 5-speed) with chain final drive

Tires

3.25x19 front, 4.00x18 rear, 3.25x18 and 3.50x18 from 1964

Model years: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975

Source: public wiki data, cleaned and reformatted. Figures are manufacturer-reported reference values, not verified by Garagely.