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77 Superspeedway Rear Wing View

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(above and below) The decklid, quarter-panels, and spoiler   are moved   back and down within rule limitations to keep the spoiler out of the airflow as much as possible to reduce drag.
Superspeedway Setups

(above and below) The decklid, quarter-panels, and spoiler are moved back and down within rule limitations to keep the spoiler out of the airflow as much as possible to reduce drag.  View Related Article