1983 Grand Prix motorcycle racing season championship. In a fitting end to a successful career, Roberts won his last-ever Grand Prix race, however Spencer was able to secure second place to claim the world championship. The two riders dominated the season with each claiming six victories and six pole positions in the 12 race series. The following Grands Prix were scheduled to take place in 1983: Points are awarded to the top ten finishers. A rider has to finish the race to earn points. 1983 Grand Prix motorcycle racing season The 1983 Grand Prix motorcycle racing season was the 35th F.I.M. Road racing World Championship season.
2007 Grand Prix motorcycle racing season the race to earn points. Points are awarded to the top fifteen finishers. Rider has to finish the race to earn points. 2007 Grand Prix motorcycle racing season The 2007 Grand Prix motorcycle racing season was the 59th F.I.M Road Racing World Championship season. The 2007 season was significant as it introduced a new regulation which specifies that competitors in the MotoGP class can use up to 800 cc motorcycles; between 2002 and 2006, competitors had been allowed to use 990 cc motorcycles. While the 800cc motorcycles have less power than their 990cc counterparts, their ability to brake later and