Urgent upgrades have been made across the Honda and Chevrolet-powered IndyCar field ahead of the series debut at the NOLA Motorsports Park in New Orleans this weekend.
Bodywork components have been strengthened after an alarming number of fragments littered the circuit at St Petersburg for the opening round.
The confronting designs of the new-for-2015 body styles saw body bits break off following contact between cars at the Florida race.
Upgrades will see components added to improve the overall strength of the bodywork with redesigns meeting IndyCar approval.
“With a quick turnaround from St. Petersburg, our partners were very diligent in making these enhancements in time for this weekend’s event,” Derrick Walker, IndyCar’s president of competition and operations, said.
“We will continue this collaboration and expect additional improvements in the future.
“IndyCar delivers a quality racing product and we will always be proactive to implement changes that benefit our fans.”
Juan Montoya survived an intense battle with fellow Team Penske champion Will Power to win the opening round after contact between the pair late in the race.
Ganassi driver Tony Kanaan was third which prevented the powerful Penske operation acing the first four positions with Helio Castroneves and Simon Pagenaud finishing fourth and fifth.