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Fin to be implemented with spoiler

Updated: March 16, 2010, 7:42 PM ET
By David Newton | ESPN.com

TALLADEGA, Ala. -- The 3½ inch fin that NASCAR implemented for the left side of the rear deck lid and window for the Daytona 500 will be used at all tracks once the spoiler is introduced, expected to be at Martinsville on March 28, to help keep cars on the ground.

It was determined during wind tunnel tests after Brad Keselowski's car went airborne in the closing laps at Atlanta Motor Speedway two weeks ago that the fin would decrease the probability of liftoff.

They were introduced ...

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