Beat Feuz, the Swiss racer who won the season-long World Cup downhill title last season, finished third, 0.52 behind.
Paris, who also won this race in 2012 and 2017, matched the record of three victories on the Stelvio held by Austrian greats Hermann Maier and Michael Walchhofer.
It was the 10th win of Paris’ World Cup career and his 25th podium result.
Paris’ speed was clocked at nearly 135 kph (84 mph) on the Stelvio’s only straightaway. Otherwise, he was letting his massive thighs absorb the bumps and terrain on the course’s constant turns.
“I wouldn’t say it was a perfect race but in the second part I let the skis run and gave my all, especially on the bottom, using all of my strength,” Paris said. “I always dream of winnning but especially when it’s really challenging. Then it really means a lot to me.”
Innerhofer has also had plenty of success on the Stelvio. He claimed the first of his six World Cup wins on this course in 2008 and was third in 2010.