Every summer, the world's top motocross racers come together for the grueling 12-race AMA Outdoor Motocross Championship Series to battle the heat, the tracks and each other. These are just a few of their stories.
Season 3 provides an inside look at one of the most grueling professional race series in the world; the AMA Pro Motocross Series. The AMA Pro Motocross Series is a melting pot of the best riders not only from around the US, but the world.
Overview：Every summer, the world's top motocross racers come together for the grueling 12-race AMA Outdoor Motocross Championship Series to battle the heat, the tracks and each other. These are just a few of their stories.
