An attenuator increases the safety of the car by decreasing G-force levels. Team Penske is believed to have filled in a gap to eliminate a slight lip, which can slow the car down.

What is an attenuator? IndyCar's focus in 2025 Indy 500 cheating scandal. Start the day smarter. Get all the news you need in your inbox each morning.

Josef Newgarden's car he won the 2024 Indy 500 with had the same modified attenuator Penske failed tech inspection with during qualifying for the 2025 race. INDIANAPOLIS — The violation that ...

What is an attenuator? IndyCar's focus in 2025 Indy 500 cheating scandal. IndyCar and chassis supplier Dallara introduced a new rear attenuator for the 2023 to improve safety and "greater ...