Motorcycle USA Posted May 22, 2008 Report Share Posted May 22, 2008 Mark Burkhart (Graves Motorsport Yamaha), 2008 Moto X World Champion, 2007 X-Games Supermoto Gold winner, and 2007 AMA Supermoto Champion will be in Springfield Illinois this Memorial Day Weekend racing in the AMA GNC Singles Championship on a Memphis Shades Yamaha. More... Quote Link to comment Share on other sites More sharing options...
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