Dallara DW12 (IR-18) '2018–23

In March 2017, IndyCar Series announced that the DW12 would receive a redesign and facelift of its aerodynamic system, with all cars to run identical aero kits at all races starting in 2018. Codenamed UAK18 (Universal Aero Kit 2018), the base Dallara safety cell design will remain as-is: however, several components, including the airbox and rear-wheel guards, will be removed. The latter were removed as research showed that they were largely ineffective in reducing large crashes and would often break easily, as would other extraneous winglets.