2019 Ama mororcross Round #2: Glendale, AZ - State Farm Stadium

The American Motorcyclist Association awards three Supercross Championship Champs each year.

In this Year 2019 Ama mororcross Round #2: Glendale, AZ - State Farm Stadium .World Supercross Champions are named by other racing organizations around the world. Supercross racing classifications are governed by the displacement of the motorcycle's engine based on two-stroke engines until 2006, as four-stroke engines replaced two-stroke engines. Since then, the (AMA=Amarican motorcyclist Association) has labeled the classes by four-stroke displacement.