The Seven Rivals
Not every biker gang that has ever been created essentially commits crimes and even if it does, it’s not the same as the crimes committed by the leading one percent of all biker gangs. Naturally, the US Justice Department pays close attention to the top seven gangs that contribute to the most trouble.
The famous seven rivals have the Hells Angels on top along with their primary opponents, the Mongols. Moving from California to the Midwest you meet the Outlaws, whereas the king biker gang on the East Coast is Pagans. The other three include the Sons of Silence, Cossacks, and Vagos.