NASCAR has fined three Joe Gibbs Racing crew chiefs and suspended three JGR car chiefs for one race for nonconforming front splitters confiscated during prerace technical inspection Sunday at Michigan International Speedway.
It fined JGR crew chiefs Adam Stevens (Busch), Mike Wheeler (Hamlin) and Chris Gayle (Jones) $25,000 each and suspended the car chiefs (Jason Overstreet, Nate Bellows and Brandon Griffeth) for those drivers for the upcoming Cup race at Sonoma.
A JGR spokesman said the team will not appeal the penalty.
The penalties continue a NASCAR trend toward suspending car chiefs, who often play a more hands-on role with the car than the crew chief during a weekend. The car chief typically is in charge of setting up the car to the specifications decided by the crew chief and engineer.
NASCAR has intensified inspection of the front splitters -- a key component in impacting downforce as well as how the air flows around the car -- in the last five weeks to make sure they are flat.