AMA Supercross Champion James Stewart inaugurated the 2010 YZ450F with new  Akrapovic Evolution, full titanium exhaust in perfect fashion after sweeping the high-profile US Open Indoor event at the glitzy setting of Las Vegas and walking away with the 100,000 dollar grand prize with victory on both Friday and Saturday nights.

Stewart and his team now head across the Atlantic for some headlining appearances at premier European Supercross venues. The first will be at Genoa in Italy and then the Bercy SX in Paris. The 2010 AMA Supercross contest begins on January 9th at the Angel Stadium in Anaheim for the first of 17 rounds.