This week on The Racer X Show with Greg White presented by Chaparral Motorsports, we have AMSOIL GNCC Motorcycle highlights from Mountain Ridge where FMF/KTM's Kailub Russell clinched his second-straight GNCC National Championship! Andrew DeLong gets his first career title in the AMA National Enduro Series and we have highlights from the Muddobbers finale. Plus, AMA Superbike Champion Josh Hayes video chats with us about his fourth title in five years, and we get you up to speed on this weekend's Motocross of Nations US Team.