The very latest 2021 specification Dallara IR-18 INDYCAR is here, complete with all the teams, drivers and liveries of the 2021 NTT INDYCAR Series. 2.2 litre V-6, twin-turbocharged with upwards of 700 horsepower, high downforce and push-to-pass with in car driving adjustments, this series represents the finest of American automotive racing.