NASCAR will mandate a new right side rear-window air deflector beginning with Saturday’s Coke Zero Sugar 400 at Daytona International Speedway (7:30 p.m. ET, NBC, Peacock, NBC Sports App, MRN Radio, ...
Corey LaJoie on the new right-side rear window fin/air deflector added to the cars after NASCAR analyzed video and data from LaJoie’s flip at Michigan.
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