In the best of two run night final, the two-time Olympic medallist opened with a score of 88.75 points, then stepped it up in the final run to put down a spectacular performance that included a massive switch frontside triple cork 1440 on his way to a huge score of 95.75.
James took the win ahead of Japanese rider Ruka Hirano’s score of 93.75, while compatriot and reigning Olympic champion Ayumu Hirano was third with 87.00 points.
“I think it might be one of the best moments of my competitive career” said the 30-year-old VIS athlete from Warrandyte in Victoria.
“It’s always challenging to win, but this year I feel like I have been put on the ropes quite a bit from the other competitors, especially the Japanese, they are riding incredible.
“Not for a second did I think it was a done deal until the last rider went because any rider could have won.
“It’s always been a super important detail for me to spin in every direction, and try and keep a bit of soul in there with the switch McTwist at the start before it gets into a lot of spinning, really happy to get the triple in there this year as well which was a big goal of mine.
“It’s one of the best pipes in the world, there are no excuses but to go 110% on this thing, so you’ve got to bring your best if you want to stand on top, or even on the podium for that matter.”
The victory puts James move into equal first place on the World Cup standings alongside Yuto Totsuka of Japan on 230 points.
Competing in the women’s event for Australia was two-time Olympian Emily Arthur, who finished in 24th place.
American riders took the top two places in the women’s final with two-time Olympic gold medallist Chloe Kim victorious ahead of Maddie Mastro in second and Gaon Choi of Korea in third.
James will now head to Aspen, USA, to compete in the X-Games on January 23, where he will be aiming to win an incredible fourth straight and seventh career X-Games gold medal.