Image: Rich Shepherd.

Red Bull KTM Factory Racing’s triple world champion Jeffrey Herlings starred on debut in Lucas Oil Pro Motocross at Ironman, Indiana, as Eli Tomac was crowned 450 Class national champion.

After entering the final round of the summer needing just 22 points in order to clinch the title, Monster Energy Kawasaki’s Tomac did just that to hoist the Edison Dye Cup.

In the battle for victory on the track, MXGP regular Herlings made the most of his visit to the US, showcasing his prowess en route to the 450 Class victory in his Pro Motocross debut, sweeping the afternoon’s motos.

Herlings won both motos convincingly despite crashing in the opening turns of moto two, completing a dream one-off weekend in Pro Motocross for the overall ahead of Marvin Musquin (Red Bull KTM) and Blake Baggett (Rocky Mountain ATV-MC/WPS/KTM).

Tomac’s 5-6 results and sixth overall was enough to clinch his first career premier class title, making him the 24th different 450 Class champion in history. He also becomes the just the 11th rider in history to win a national title in both the 450 and 250 Class.

In the 250 Class, Rockstar Energy Husqvarna Factory Racing’s Zach Osborne cemented his championship-winning season with a dominant outing, going 1-1 for his series-leading fifth win. He was joined on the podium by Adam Cianciarulo (Monster Energy/Pro Circuit/Kawasaki) and Colt Nichols (Yamalube/Star Racing/Yamaha).

Osborne’s second 1-1 outing of the summer highlights an exceptionally consistent season in which he earned five wins and finished on the overall podium at 11 of 12 rounds.