The Triumph Thunderbird 900 is a British motorcycle that was manufactured between 1995 and 2004 by Triumph Motorcycles at the Hinckley factory. Launched in 1995, the Triumph Thunderbird 900 was styled to create the impression of an air-cooled triple combustion chamber although the radiator up front shows it is clearly a liquid-cooled machine. Fed by three 36 mm flat slide carburettors, the engine was lively and could cope easily with all riding styles. The swinging arm was upgraded to an oval section in 1996; in 1997 chromed plastic radiator end covers and grill were provided as standard along with chromed engine cases. In 1998 a 'king and queen' seat was added as an option,