CRAWFORDSVILLE, Tennessee — Ryan Dungey raced to his fifth straight victory and seventh of the year Saturday in the Lucas Oil Pro Motocross Championships' season-ending Ironman National.
Dungey, the Red Bull KTM rider from Belle Plaine, Minnesota, wrapped up his third 450 Class season title last week in the Utah National. He won the first moto and was second in the second en route to his 45th career overall victory.
"It's been a great year and I'm excited for what lies ahead," Dungey said.
Suzuki's Ken Roczen was second in the event and second in the final standings, 100 points behind Dungey in the 12-race competition.
"The track was gnarly out there, probably one of the toughest of the year. It feels great to end the season this way," said Roczen, the winner of the second moto after finishing third in the first. "I knew we had the ability to get into second in the championship and we came out here and did that. I was confident coming into the day because the bike's been great and we did what we needed to do."
Yamaha's Jeremy Martin won his second straight 450 Class title, finishing sixth in the finale.
Martin edged KTM's Marvin Musquin by 12 points in the standings. Musquin had mechanical problems in the first moto, dashing his chances of catching Martin.
"What a crazy year," Martin said. "Marvin was really strong this season and pushed me to my limit. He's a great competitor. It was a weird summer. I'd get great starts and good finishes, but I also had trouble at times when Marvin would do well, so it was a constant battle until the end.
"This year was a much tougher championship to win. It was tough last year, but this was a dogfight all season long and I'm even more proud to end the year on top."
Yamaha rookie teammate Aaron Plessinger raced to his first event victory, finishing second in the first moto and winning the second.
"This is amazing. I only live about 2 1/2 hours from here (in Ohio)," Plessinger said. "I was able to charge hard in both motos and it ended out working really well for me in the end. Today was a great learning experience."