Team New Zealand now leads Luna Rossa of italy 4-1 in the America's Cup challenger series in San Francisco.
Both boats completed races 4 and 5 on Wednesday.
New Zealand won race 4 by 2 minutes, 17 seconds and race 5 by 1 minute 28.
It was the first race of the series in which both high-tech catamarans finished without one having a mechanical breakdown.
The winner of the Louis Vuitton Cup will sail against Oracle Team USA in the America's Cup next month.
