Bubba re-signs with Kawasaki.

James 'Bubba' Stewart has ended speculation about his future by signing a two-year agreement to continue with Kawasaki in the AMA Motocross and Supercross championships.

Stewart will graduate to the premier 250cc class in both disciplines next season, where he is tipped to provide a serious title challenge against the likes of Ricky Carmichael and Chad Reed.

However, with RC moving from Honda to Suzuki next season, there had been rumours of Stewart becoming a 'red rider' in 2005...

"James has been part of the Kawasaki family since he began under the Team Green banner. We agreed quite a while ago that Kawasaki was the best fit for James going forward," claimed Kawasaki director of professional racing Bruce Stjernstrom.

18-year-old Stewart signed his first contract with Kawasaki in 1993, when he was seven years old, and the reigning East Coast Supercross champ is now on the verge of becoming the most successful 125cc AMA rider of all time.

"Kawasaki has been like home for me since my early days as a Team Green rider," said James. "They have a bike that I'm really comfortable with and that will be a really big advantage as I make the step up to the 250 class.

"I feel like I have some unfinished business here with Kawasaki," he warned. "Everyone knows that the 250s are the big leagues of our sport and I'm looking forward to the challenge of winning at the next level."

"The talent exhibited by James over the past several years is indicative of the type of positive influence he brings to everyone associated with him, and it also is a solid indicator of what the future holds for him, and Kawasaki," added Stjernstrom.