April 10, 20188 yr Moderators The aero package used in the Xfinity Series last season included a restrictor-plate, but even more importantly, aero ducts on the front spoilers and a taller rear spoiler.The use of the aero package on the Cup Series cars in the All-Star Race at Charlotte Motor Speedway is expected to be finalized and announced this week, multiple sources confirmed.NASCAR provided Motorsport.com the ... Keep reading View the full article
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