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  2. Mandalika International Street Circuit - Wikipedia

    en.wikipedia.org/wiki/Mandalika_International...

    The main circuit, normally raced in 4.313 km (2.680 mi) long. Repsol Honda racer, Marc Márquez, said that the Mandalika Circuit has a simple layout. However, he believes the race there will be very entertaining. "This is a simple circuit in terms of layout, but the conditions make it interesting. There is only one line to overtake," he said. [93]

  3. Motorcycle helmet - Wikipedia

    en.wikipedia.org/wiki/Motorcycle_helmet

    A 2008 systematic study showed that helmets reduce the risk of head injury by around 69% and the risk of death by around 42%. [10]Although it was once speculated that wearing a motorcycle helmet increased neck and spinal injuries in a crash, recent evidence has shown the opposite to be the case: helmets protect against cervical spine injury.

  4. List of Grand Prix motorcycle circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_Grand_Prix...

    This is a list of circuits which have hosted a World Championship race from 1949 to 2024.. In total, 74 different circuits have hosted World Championship races. The first to do so was the Snaefell Mountain Course, home of the Isle of Man TT, which also has the distinction, at 60.718 km (37.728 mi) long, of being the longest track which hosted a World Championship race.

  5. Motorcycle racing - Wikipedia

    en.wikipedia.org/wiki/Motorcycle_racing

    Grand Prix motorcycle racing refers to the premier category of motorcycle road racing. It is divided into three distinct classes: Moto3: Introduced in 2012, motorcycles in this class are 250cc with single-cylinder four-stroke engines Previously it featured 125 cc two-stroke motorcycles. This class is also restricted by rider age, with an upper ...

  6. Bell Sports - Wikipedia

    en.wikipedia.org/wiki/Bell_Sports

    The "Bell Helmet Company" was established as a division of Bell Auto Parts in 1956. [2] Bell introduced its Star model, the first full-face motorcycle helmet on the market, in 1968. [4] In 1971, Bell produced the first full-face off-road motorcycle helmet. [5] Bell made its first production helmet in 1954.

  7. Nelson Ledges Road Course - Wikipedia

    en.wikipedia.org/wiki/Nelson_Ledges_Road_Course

    Nelson Ledges Road Course is a paved automobile and motorcycle racing circuit in Garrettsville, Ohio which first opened as a dirt track in 1958. [1] In its current form, the track is 2 miles (3 km) long and consists of seven major turns.

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