When Bilous - a 2016 Youth Winter Olympics silver medallist - started his second run, a score better than 84.20 was needed to make the finals.
Finn Bilous. Photo / Getty Images His score of 85.00 put him in 12th for sometime, but he was eventually knocked out of the top-12, missing out by just 0.80 points.
He continued his good form off the rails before a couple of double cork 12s (3.5 spins with two off-axis flips) to sit 12th and on the cusp of progressing to the final.
But he was dropped out soon after when Canadian Alex Beaulieu-Marchand came from outside the top-12 to blitz his run with a score of 94.20.
Of those who qualified for the final, eight riders scored in the 90s.
Sweden's Oscar Webster scored a whopping 95.40 in his second run to finish first overall.
His score bumped Swiss rider Andri Ragetti from first down to second. Canadian Alex Beaulieu-Marchand finished third.
Jackson Wells. Photo / Getty Images In the first round, Bilous crashed heavily attempting a triple cork on his first run after a good rail section, scoring a disappointing 24.80.
In Wells' first run, he managed a good run that wasn't executed perfectly which cost him some points.
He scored the better of the two from the first round with a reasonable score of 52.80.
A mistake on the first rail section of his second run resulted in him pulling out of any further tricks.
Wells was in front of Bilous after the first run, ended up trailing him by 12 positions in the overall standings.
Meanwhile, in the Giant Slalom ski event, New Zealanders Adam Barwood and Willis Feasey finished 40th and 42nd overall from the first run.
Barwood recorded a time of 1:13.41 hours, just under a minute faster than Feasey who finished in 1:14.48 hours.
Macel Hirscher of Austria finished first, some five seconds ahead of Barwood with a time of 1:08.27 hours.
To get the day's top sports stories in your inbox, sign up to our newsletter here