Bilous landed his second run cleanly and increased his score to 90.80 before Birk Irving lifted the stakes even higher with a score of 93.00. Bilous pushed hard on his third and final attempt. He upped his score to a 92.20 but it was not quite enough to topple Irving from the top spot.
"I'm really happy with the way I skied today," said Bilous. "Birk came through with an amazing run. Now I've got the slopestyle event to look forward to."
Bilous will compete in the freeski slopestyle event on Saturday (Sunday morning NZT.)
The freeski halfpipe rounded out a successful day of competition for the New Zealand team.
The snowboard halfpipe was held earlier in the day with New Zealanders Tiarn Collins and Rakai Tait claiming fifth and sixth place respectively.
In alpine ski racing Elizabeth Reid finished 11th in the women's Alpine Combined and Jackson Rich 25th in the men's event.