The Formula TT was a racing class for motorcycles from 1977 to 1990 as the official World Cup under the umbrella of International Motorcycling Federation. It was in three engine capacity classes, and was divided into both two and

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

engines.

History

From

1949 Events January * January 1 – A United Nations-sponsored ceasefire brings an end to the Indo-Pakistani War of 1947. The war results in a stalemate and the division of Kashmir, which still continues as of 2025 * January 2 – Luis ...

1976 Events January * January 2 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 18 – Full diplomatic ...

the Isle of Man TT was part of the Motorcycle Grand Prix World Championship and was the home of the British Grand Prix. The event came under increasing scrutiny due to safety concerns despite efforts by the ACU to retain its world championship status. When Italian rider

Gilberto Parlotti Gilberto Parlotti (17 September 1940 – 9 June 1972) was an Italian professional motorcycle racer competing in the FIM World Championship between 1969 and 1972. He competed for the Benelli, Derbi, Morbidelli and Tomos factories. Parlot ...

was killed during the 1972 TT, his close friend and the reigning world champion

Giacomo Agostini Giacomo Agostini (; born 16 June 1942) is an Italian former professional motorcycle road racer and racing team manager. He competed in the FIM Grand Prix motorcycle racing world championships from 1963 to 1977, most prominently as a member of ...

, announced that he would never again race on the

Isle of Man The Isle of Man ( , also ), or Mann ( ), is a self-governing British Crown Dependency in the Irish Sea, between Great Britain and Ireland. As head of state, Charles III holds the title Lord of Mann and is represented by a Lieutenant Govern ...

. More riders joined Agostini's boycott and by the

season, only a handful of serious Grand Prix riders were among the entrants. Shortly after the 1976 TT, the FIM made the long-anticipated announcement that the TT, once the most prestigious race on the Grand Prix calendar, was stripped of its world championship status. The Grand Prix action was moved to the UK with the

1977 Events January * January 8 – 1977 Moscow bombings, Three bombs explode in Moscow within 37 minutes, killing seven. The bombings are attributed to an Armenian separatist group. * January 10 – Mount Nyiragongo erupts in eastern Zaire (no ...

British Grand Prix being held at Silverstone. The race authorities of the Isle of Man TT worked with Auto Cycle Union to set up a new formula that would include racing on the Isle of Man. This series was the result of that collaboration. For the first two years all three formula were run as part of the Isle of Man TT: *1977 One event: Tourist Trophy, Isle of Man *1978 One event: Tourist Trophy, Isle of Man In 1979 a second race was added: *1979 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (

Northern Ireland Northern Ireland ( ; ) is a Countries of the United Kingdom, part of the United Kingdom in the north-east of the island of Ireland. It has been #Descriptions, variously described as a country, province or region. Northern Ireland shares Repub ...

) *1980 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (Northern Ireland) *1981 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (Northern Ireland) For the start of the 1982 season Formula III was dropped and the number of circuits was increased: *1982 Three events: Tourist Trophy, Isle of Man,

Vila Real, Portugal Vila Real () is the capital and largest city of the Vila Real District, in the Norte, Portugal, North region, Portugal. It is also the seat of the Douro (intermunicipal community), Douro Intermunicipal communities of Portugal, intermunicipal comm ...

; Ulster Grand Prix, Dundrod (

) *1983 Four events: Tourist Trophy, Isle of Man; TTF1,

Dutch TT The Dutch Tourist Trophy, also known as the ''TT Assen'', and also sometimes known as the Dutch Motorcycle Grand Prix, is an annual Dutch motorsport event established in 1925 for road racing motorcycles held on the TT Circuit Assen, also known ...

Assen Assen () is a List of cities in the Netherlands by province, city and Municipalities of the Netherlands, municipality in the Northeastern Netherlands, and is the capital (politics), capital of the province of Drenthe. It received City rights in ...

(

Netherlands , Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...

); Ulster Grand Prix, Dundrod (Northern Ireland); and TTF2,

(second meeting at the circuit) *1984 Six events: TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands), TTF1-TTF2, Vila Real (Portugal); TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland); TTF2,

Brno Brno ( , ; ) is a Statutory city (Czech Republic), city in the South Moravian Region of the Czech Republic. Located at the confluence of the Svitava (river), Svitava and Svratka (river), Svratka rivers, Brno has about 403,000 inhabitants, making ...

(

Czechoslovakia Czechoslovakia ( ; Czech language, Czech and , ''Česko-Slovensko'') was a landlocked country in Central Europe, created in 1918, when it declared its independence from Austria-Hungary. In 1938, after the Munich Agreement, the Sudetenland beca ...

);TTF1, Zolder (

Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...

), *1985 Six events: TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands); TTF1-TTF2, Vila Real (Portugal); TTF1-TTF2, Montjuich (

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

); TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland); TTF1,

Hockenheim Hockenheim () is a town in northwest Baden-Württemberg, Germany, about 20 km south of Mannheim and 10 km west of Walldorf. It is located in the Upper Rhine Plain, Upper Rhine valley on the tourist theme routes "Baden Asparagus Route" ( ...

(

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

) *1986, Eight events: TTF1, San Marino motorcycle Grand Prix, Misano (Italy); TTF1, Hockenheim (Germany); TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands); TTF1-TTF2, Jerez (Spain); TTF1, Vila Real (Portugal); (TTF1) Imatra (

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

); and TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland) For the remaining four seasons only Formula I races were run: *1987 Seven events: Misano (Italy);

Hungaroring The Hungaroring is a motorsport racetrack in Mogyoród, Pest County, Hungary where the Formula One Hungarian Grand Prix is held. In 1986, it became the location of the first Formula One Grand Prix motor racing, Grand Prix behind the Iron Curtai ...

(

Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...

); Tourist Trophy; Isle of Man, Dutch TT - Assen (Netherlands); Sugo (

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

); Hockenheim (Germany); and

Donington Park Donington Park is a motorsport Race track, circuit located near Castle Donington in Leicestershire, England. The circuit business is now owned by Jonathan Palmer's MotorSport Vision organisation, and the surrounding Donington Park Estate, sti ...

(

England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...

). *1988, Eight events: Sugo (Japan); Tourist Trophy, Isle of Man; Dutch TT - Assen (Netherlands); Vila Real (Portugal); Kouvola (Finland); Dundrod (Northern Ireland); Pergusa (Italy); and Donington Park (England) *1989, six events: Sugo (Japan); Tourist Trophy, Isle of Man; Dutch TT - Assen (Netherlands); Vila Real (Portugal); Kouvola (Finland); and Dundrod (Northern Ireland). *1990, five events: Sugo (Japan); Tourist Trophy, Isle of Man; Vila Real (Portugal); Kouvola (Finland); and Dundrod (Northern Ireland).Championnat du Monde - TT Formula 1990
/ref> In 1988 a rival series called the

Superbike World Championship Superbike World Championship (also known as WorldSBK, SBK, World Superbike, WSB, or WSBK) is a silhouette road racing series based on heavily modified production sports motorcycles. The championship was founded in . The Superbike World Champion ...

started and as it proved popular and commercially successful, it was decided to end the Formula TT at the end of the 1990 season.

Technical regulations

The TT Formula was divided into three categories: * Formula I -

from 600 to 1000 cc (reduced to 750 cc since 1984) and

two-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...

350 to 500 cc * Formula II - four-stroke from 400 to 600 cc and two-stroke 250 to 350 cc * Formula III - four-stroke from 200 to 400 cc and two-stroke 125 to 250 cc

List of winners

Notes

References

Unofficial website of the Tourist Trophy & Road Race Portal Road Race Supporters

Official website of the Tourist Trophy

(French) {{DEFAULTSORT:Formula Tt Formula TT Formula TT Formula TT