Bilous put together a technical run and was rewarded with a score of 90.75 for his run, just two points behind the winning score.
"It’s been awesome to be in Colorado working on new tricks like the double 1440 that I landed," he said.
‘‘It was a great event to test out my new tricks before the world champs next week.”
Kiernan Fagan claimed victory with a score of 92.75 and fellow American Ralph Konnor rounded out the podium in third.
The event was Bilous’s first slopestyle competition in more than 13 months.
A broken collarbone late in the 2020 New Zealand season resulted in him missing the first World Cup slopestyle of the 2021 season held in Austria in November.
The result is a great confidence-builder for Bilous before he heads into the Freeski World Championships next weekend.
Fellow New Zealand freeskier Luca Harrington, of Wanaka, finished seventh in the slopestyle.