Before Sunday’s race, NASCAR inspectors discovered irregularities with the splitters on three of the Joe Gibbs Racing Toyotas—those of Chase drivers Carl Edwards, Kyle Busch and non-Chaser Denny Hamlin.
The sanctioning body required the three JGR teams to replace the splitters and confiscated the parts that failed to pass inspection.
NASCAR will review the situation during the week and decide if any further action is warranted.
Busch finished fourth in the AAA Texas 500 at Texas Motor Speedway and is second in the Chase standings with one race left in the Eliminator Round. Edwards ran fifth at TMS, the same position he occupies in the standings.
Hamlin suffered a fuel pump problem early in the race and finished 38th, 30 laps down.
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