Finley Melville Ives (Wānaka, 18) and Luke Harrold (Lake Hāwea, 16) secured the gold and silver medals respectively.
Melville Ives was "stoked" to claim victory.
"It’s so amazing and it’s such a good result at the last halfpipe competition of the season — I am really happy.
"It was such a high-level event ... so many good runs were being thrown down.”
Melville Ives delivered a technical run executed with precision and had plenty of amplitude, scoring a 92.67.
His winning run included a huge switch left double corked 1080 into back-to-back double corked 1260s.
Harrold, who finished second with a score of 90, put down a hugely technical run that included his trademark trick combination of back-to-back switch double alley-oop 900s on his final two hits.
"They are kind of my specialty, so I really enjoy doing them," Harrold said.
"It’s a super fun, floaty trick. The level of competition was really high today and it was so cool to see everyone throwing down their best runs.”
As it was a seeded start list, the top athletes were the first to drop into the halfpipe,so Harrold was first to drop followed immediately by Melville Ives.
Head freeski judge Victoria Beattie said Harrold’s run was "incredible" and it was always going to take something special to beat him.
"Fin executed his run just that little bit cleaner, landed higher on the pipe wall, showed better control through the bottom and put down a great technical run.
“Luke came out swinging in his second run but didn’t quite land it, but it was great to see a glimpse of what we can expect to see from him on the world cup circuit this upcoming season.”
Australian skier Indra Brown claimed the women’s freeski halfpipe title.
Kanoe Pelfrey (American Samoa) won the women’s snowboard halfpipe competition, and Zensei Nishizuka (Japan) won the men’s snowboard halfpipe.
Campbell Melville Ives, Finley’s brother, finished fourth in the snowboard halfpipe.
Judges said his run and amplitude were excellent, and they were impressed by his level of riding, but he could not quite stick the landing on his final hit.
Competition continues today with the FIS ANC freeski slopestyle competition on Big Bucks terrain park and the age division freeski and snowboard competitions in the halfpipe.
