2003 Infiniti Pro Series season

The 2003 IRL Menards Infiniti Pro Series Season was the series' second. It consisted of 12 races and the champion was Mark Taylor who won 7 of 12 races and only suffered 2 DNF's and 1 DNS. All teams used Dallara chassis and Infiniti engines. Only 7 drivers competed in every race and 3 more missed a single race.

The Western Union 100 was held March 2 at Homestead-Miami Speedway. Thiago Medeiros won the pole.

Top 5 Results

The Phoenix 100 was held March 22 at Phoenix International Raceway. Mark Taylor won the pole.

Top 5 Results

The inaugural Freedom 100 was held May 18 at the Indianapolis Motor Speedway. Ed Carpenter won the pole.

Top 5 Results

The Pikes Peak 100 was held June 14 at Pikes Peak International Raceway. Jeff Simmons won the pole.

Top 5 Results

The Aventis Racing for Kids 100 was held July 6 at Kansas Speedway. Ed Carpenter won the pole.

Top 5 Results

The Cleanevent 100 was held July 18 at Nashville Superspeedway. Mark Taylor won the pole.

Top 5 Results

The Michigan 100 was held July 27 at Michigan International Speedway. Arie Luyendyk Jr. won the pole.

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