You might hear the term "weight jacker" said during oval races. So what does the weight jacker do and how does it work? Warren Wilson with AJ Foyt Racing explains in this edition of INDYCAR 101 presented by Pennzoil. Download the INDYCAR App Powered by NTT DATA: https://www.indycar.com/mobile-app Follow the NTT INDYCAR SERIES: Twitter // https://twitter.com/IndyCar Facebook // https://www.facebook.com/indycar Instagram // https://www.instagram.com/indycar TikTok // https://www.tiktok.com/@indycar

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