Complex sentence: The series was founded for the 2009 season by former motocross racer and Motorcycle Hall of Fame member Ricky Johnson after he had hosted an off-road racing event at his Perris Auto Speedway in 2008.
Split into simpler sentences: The series was founded for the 2009 season by former motocross racer and Motorcycle Hall of Fame member Rick Johnson. He had hosted an off-road racing event at his Perris Auto Speedway in 2008.