ROAD RACING WORLD CHAMPIONSHIP GRAND PRIX
Road Racing World Championship Grand Prix is the premier championship of motorcycle road racing,It currently divided into three distinct classes: 125cc, 250cc and MotoGP. Grand prix motorcycles are purpose to built racing machines that are neither available for general purchase nor can be ridden on public roads.This contrasts with the various production categories of racing, such as the Superbike World Championship, that feature modified versions of public roads.
Based on engine size, there have been several races at each event for various classes of motorcycles. 125cc machines are restricted to a single cylinder and a minimum weight of 80 kilograms, and the 250cc machines are restricted to two cylinders and a minimum weight of 100 kilograms. From 2005 onwards, all riders in the 125cc class could not be older than 28 years or 25 years for new contracted riders participating for the first time and wild cards.
Moto GP, the premiere class of motorcycle racing,It has changed in recent years.From the mid 1970’s until 2002 the top class of GP racing allowed 500cc with a maximum 4 cylinders, regardless of whether the engine was two strokes or four stroke. In 2002, rule changes were introduced to facilitate the phasing out of the two strokes, probably influenced by what was then seen as a lack of relevance: the last mass-produced 500cc 2-stroke model had not been available to the public for some 15 years.As a result,by 2003 no two-stroke machines remained in the MotoGP field. The 125cc and 250cc classes still consist of two-stroke machines.From 2007 onwards, the maximum engine capacity was reduced to 800cc without reducing the existing weight restrictions.
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