James Stewart Jr. (born December 12, 1985) is an African-American professional motocross and Supercross racer. In 2007, he won his first AMA National Supercross Championship winning 13 of 16 races in the process, and had won the World and Lites championships before that. He is widely regarded as the best racer in Supercross after the retirement of Ricky Carmichael. Image:Motorcycle 2.png This article is a stub. You can help Motorcycle Wiki by expanding it.