Chase Sexton shone on a challenging course at the Rice-Eccles Stadium, mastering the track and the competition to snatch the lead in the second half of the race, before pulling the pin to take his second win of the season and his fourth straight in Salt Lake City by a margin of just over two seconds.
He was joined on the podium by Justin Cooper in second.
Cooper Webb finished fourth and Hunter Lawrence seventh; both Alpinestars riders.