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. Team Penske's ...

INDIANAPOLIS — The violation that sent Josef Newgarden from third fastest during Day 1 of Indianapolis 500 qualifying on Saturday to a tech inspection violation for altering the attenuator ...

IndyCar impounded the car's attenuator and deemed it to have been legal and unmodified. Therefore, the series said, the No. 3 will maintain it's 10th-place starting spot on the grid. IndyCar has ...

IndyCar and chassis supplier Dallara introduced a new rear attenuator for the 2023 to improve safety and "greater crushability" to reduce the force felt by the driver when the back of the car is ...