Franks and his older brother Ben were both selected for the 2011 Rugby World Cup. Franks started in all of the knockout rounds, playing the full 80 minutes of the World Cup Final against France on 23 October 2011, with the replacement prop, his brother Ben, not making the field. New Zealand won against France 8-7, with Franks collecting his winners' medal as All Black captain Richie McCaw lifted the trophy, with New Zealand winning the competition for the second time, having won the first Rugby World Cup in 1987. According to the book, "Cory Jane Winging It, Random Tales from the Right Wing", by former All Blacks teammate Cory Jane and Scott Stevenson, Franks and brother Ben are said to have celebrated the All Blacks Rugby World Cup 2011 victory by squatting the next day 280 kg for 10 Repetitions.