The Ultra-Lightweight TT was a motorcycle road race that took place during the

Isle of Man TT The Isle of Man TT or Tourist Trophy races are an annual motorcycle racing event run on the Isle of Man in May and June of most years since its inaugural race in 1907 Isle of Man TT, 1907. The event begins on the UK Spring Bank Holiday at the e ...

festival, an annual event at the end of May and beginning of June. Between 1951 and 1974 this race was part of the

Grand Prix motorcycle racing Grand Prix motorcycle racing is the highest class of motorcycle road racing events held on Road racing, road circuits sanctioned by the Fédération Internationale de Motocyclisme (FIM). Independent motorcycle racing events have been held sin ...

season at world-level, representing the British round. The Ultra-Lightweight TT and the

Lightweight TT The Supertwin TT is a motorcycle road race that is a part of the Isle of Man TT festival - an annual motorcycle event traditionally held over the last week of May and first week of June. Prior to the 2022 edition of the Isle of Man TT, TT, the ...

races were both dropped from the 2005 Isle of Man TT race calendar due to lack of entries, but were later reinstated to the

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and

2009 2009 was designated as the International Year of Astronomy by the United Nations to coincide with the 400th anniversary of Galileo Galilei's first known astronomical studies with a telescope and the publication of Astronomia Nova by Joha ...

TT race schedules held on the Billown Circuit.

Engine Capacity

The 1924 Isle of Man TT was the first race for Ultra-Lightweight motorcycles not exceeding 175 cc engine capacity, won by Jack Porter, on a New Imperial at an average speed of for three laps of the

Snaefell mountain course The Isle of Man TT Mountain Course or ''TT Course'' or ''Snaefell Mountain Course'' or ''Elmo’s Mountain Course'' is a street and Road racing, public rural road circuit located in the Isle of Man, used for motorcycle racing. The motorcycle ''T ...

. The Ultra-Lightweight TT race was re-introduced for the 1951 Isle of Man TT race for motorcycles not exceeding 125 cc engine capacity until dropped from the TT race meeting in 1974. The Ultra-Lightweight race was re-introduced for the 1989 TT races, again for motorcycles not exceeding 125 cc engine capacity and was part of the TT Festival until 2004. * 1924-1925 For motor-cycles not exceeding 175 cc engine capacity. * 1951-1953 World Championship event for motorcycles not exceeding 125 cc engine capacity, held on the

. * 1954-1959 World Championship event for motorcycles not exceeding 125 cc engine capacity, held on the

Clypse Course The Clypse Course describes a motor-cycle racing course used for the Isle of Man TT Races between 1954 and 1959. The course is long and is in the parish of Onchan in the Isle of Man. The course uses two short sections of the Snaefell Mountai ...

. * 1960-1974 World Championship event for motor-cycles not exceeding 125 cc engine capacity, held on the Mountain Course. * 1989-2004 for motorcycles not exceeding 125 cc engine capacity, held on the Mountain Course. * 2008-2009 for motorcycles not exceeding 125 cc engine capacity, held on the Billown Circuit. * 1962-1968 Additional World Championship event for motorcycles not exceeding 50 cc engine capacity, held on the Mountain Course.

Speed and Lap Records

The lap record for the Ultra-Lightweight TT is 19 minutes and 18.2 seconds at an average speed of set by Chris Palmer during the 2004 Ultra-Lightweight 125 cc TT Race.

Engine Capacity

Speed and Lap Records

List of Ultra-Lightweight TT Winners

50cc Ultra-Lightweight TT Winners

Ultra-Lightweight TT Race Winners

Ultra-Lightweight TT Race Winners by Marque

See also

References