 Suzuki riders Marco Lucchinelli and Randy Mamola battled it out to the final race of the season with the Italian rider claiming the crown and Mamola finishing runner-up for the second consecutive year.Barry Sheene would win the final race of his career with a win in Sweden while a young American named Freddie Spencer made his first foray into the GP world, riding the four-stroke Honda NR500 up to fifth place at the British Grand Prix before it broke down.Germany's Anton Mang scored double world championships, defeating defending champion Jon Ekerold for the 350cc title and winning ten of twelve 250 events to take that title.