Moderators reporter Posted April 10, 2018 Moderators Share Posted April 10, 2018 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 Link to comment Share on other sites More sharing options...
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