For several decades Triumph's 'twin' engine design by Edward Turner dictated the direction of the whole motorcycle industry. This new edition features the major

The spearhead of a highly successful export drive, a winning production racer and the top 'street fighter' of its day, the Triumph Bonneville retains a special

Practical, straightforward guide to buying a secondhand Triumph Bonneville, from the very first 1959 T120 pre-unit 650, to the very last T140 unit 750 machines