James Stewart and JGRMX went their separate ways immediately following the Las Vegas Supercross finale. It was just a matter of time before the news became public, but Stewart wasted no time confirming the other half of the rumor that he would be riding yellow. Stewart signed with Yoshimura Suzuki and will contest the outdoor Nationals for the factory squad. He will join existing Suzuki rider Brett Metcalfe. Stewart has already been testing his new 2012 Suzuki RM-Z450. Check out the photos below.