The Triumph Speed Twin & Thunderbird Bible covers All 5T 498cc &6T 649cc models 1938 to 1966.
Auhtor: Harry Woolridge, ISBN: 9781845849825, Paperback, Reprint Published in 2016, 144 pages.
• The definitive history of two of Triumph's most popular motorcycles
• Covers ALL 5T 498cc & 6T 649cc models 1938 to 1966
• In-depth information on the Thunderbird not previously available
• Year-by-year development history
• Year-by-year engine and frame numbering details enable correct identification of any machine
• Colour schemes
• Photographs showing each model in detail
• Competition record for both Speed Twin and Thunderbird
• The essential reference for owners & enthusiasts
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