In 2004, Ambrose claimed three pole positions and five round wins and went into the final round at Eastern Creek with a virtually unbeatable lead. In the end he collected his second championship in the opening Saturday night race and then went on to clean-sweep the round in record-breaking style in his Pirtek Falcon. Teammate Russell Ingall finished second in the championship, giving Stone Brothers Racing a 1–2 Quinella finish. The late part of the season was highlighted by an altercation between Ambrose and Rick Kelly when Ambrose appeared to have brake-checked Kelly on purpose after a race at the Gold Coast; Ambrose was fined $10,000 for careless driving.