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2.4l twin-turbo v6

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Freedom 250 race distance extended

Freedom 250 race distance extended

The best and the worst: Ryan Hunter-Reay on his career highs and lows

The best and the worst: Ryan Hunter-Reay on his career highs and lows

Palou expects track records to fall with IR28 after second day of testing

Palou expects track records to fall with IR28 after second day of testing

Pfaff Motorsports to withdraw from IMSA at season's end

Pfaff Motorsports to withdraw from IMSA at season's end

IR28 impresses as Rossi completes first validation test at Indy

IR28 impresses as Rossi completes first validation test at Indy

IndyCar 2028: The new engine formula, explained

IndyCar

IndyCar 2028: The new engine formula, explained

By Marshall Pruett - Dec 19, 2025, 10:14 AM ET

RACER’S Marshall Pruett has spent the last year tracking developments with the IndyCar Series’ new chassis, engine, and the rest of what’s on the way for 2028.

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