Ultra-Lightweight TT

The Ultra-Lightweight TT is a motorcycle road race that takes place during the Isle of Man TT 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 season. The Ultra-Lightweight TT and the Lightweight TT Races were both dropped from the 2005 Isle of Man TT Race calendar due to lack of entries. The Ultra-Lightweight TT and the Lightweight TT were later reinstated to the 2008 Isle of Man TT race schedule and held on the 4.25 mile Billown Circuit in the Isle of Man.^[1]

Engine Capacity

The 1924 Isle of Man TT was the first time the Ultra-Lighweight TT race took place for motor-cycles not exceeding 175 cc engine capacity. It was won by Jack Porter, riding a New Imperial motor-cycle at an average speed of 51.21 mph (82.41 km/h) for 3 laps of the Snaefell mountain course. The Ultra-Lightweight TT Race was re-introduced for the 1951 Isle of Man TT Race for motor-cycles not exceeding 125 cc engine capacity. The Ultra-Lighweight class was part of the Isle of Man TT Races until 1974 races and then dropped from the TT Race meeting. The Ultra-Lightweight TT Race was re-introduced for the 1989 Isle of Man TT Races again for motor-cycles not exceeding 125 cc engine capacity and was part of the TT Festival until the 2004 Isle of Man TT Races.

1924-1925 For motor-cycles not exceeding 175 cc engine capacity.
1951-1953 World Championship event for motor-cycles not exceeding 125 cc engine capacity and held on the Snaefell mountain course.
1954-1959 World Championship event for motor-cycles not exceeding 125 cc engine capacity and held on the Clypse Course.
1960-1974 World Championship event for motor-cycles not exceeding 125 cc engine capacity and held on the Mountain Course.
1989-2004 for motor-cycles not exceeding 125 cc engine capacity and held on the Mountain Course.
2008 – present for motor-cycles not exceeding 125 cc engine capacity and held on the Billown Circuit.

1962-1968 Additional World Championship event for motor-cycles not exceeding 50 cc engine capacity and held on the Mountain Course.

50cc Ultra-Lightweight TT Winners

Year	Rider	Motorcycle	Average Speed
1962	Ernst Degner	Suzuki	75.12 mph
1963	Mitsuo Itoh	Suzuki	78.81 mph
1964	Hugh Anderson	Suzuki	80.64 mph
1965	Luigi Taveri	Honda	79.66 mph
1966	Ralph Bryans	Honda	85.66 mph
1967	Stuart Graham	Suzuki	82.89 mph
1968	Barry Smith	Derbi	72.90 mph

Speed and Lap Records

The lap record for the Ultra-Lightweight TT is 19 minutes and 18.2 seconds^[2] at an average speed of 110.52 mph (177.86 km/h) set by Chris Palmer during the 2004 Ultra-Lightweight 125 cc TT Race.