red bull DIRTY DOZEN
Red Bull Dirty Dozen is a unique amateur motocross series, that takes place in conjunction with Thursday Night Motocross at The Portland International Raceway. Out of the 24 regular season races at TNMX, 12 races are randomly designated Red Bull Dirty Dozen races, where points from each race count towards the title championship! At the end of 12 races, the leaders are crowned Dirty Dozen Champions.
