Chastain had won the race and took both the Stage 1 and 2 victories, but failed post-race inspection. The truck was found to be too low in the front and led to a disqualification that stripped him of the win and the points he had earned.
Brett Moffitt was named the race winner.
Niece Motorsports argued that minor damage during the race caused the truck to fail the minimum height ...Keep reading

Source: Ross Chastain's Iowa disqualification upheld after appeal