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Motorsport
Motorsport
Sport
Nick DeGroot

RCR loses appeal, penalties upheld for Dillon and No. 3 team

NASCAR took Dillon's car back to the R&D Center following the Cup race at Martinsville Speedway last month, and were later issued an L1 penalty.

After further inspecting the car, they found a violation relating to the 'Underwing Assembly Mounting & Underwing Stay Assembly Hardware' section of the rulebook. Dillon had finished 12th at Martinsville.

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