1999 Supersport World Championship season Tags: Motorsport Season.The 1999 Supersport World Championship season was the 1st edition of the Supersport World Championship. The season began on March 28 and ended on September 19 after 11 races.Stéphane Chambon won the riders’ title and Yamaha the manufacturer title. series Supersport World Championship year 1999-01-01T00:00:00+02:00 Learn more... Loading...