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.”