Three Joe Gibbs Racing crew chiefs have received one-race suspensions in the NASCAR Cup Series.
Denny Hamlin, Kyle Busch, and Erik Jones’ Toyota Camry’s were all found to have unapproved front splitters during pre-race technical inspection at Michigan International Speedway.
It resulted in the trio starting the race from the rear of the field, before additional penalties were handed out post-event for the L1-level infractions.
On Tuesday, NASCAR fined the three respective crew chiefs US$25,000 over the incident.
They were also suspended for one race, along with each car’s ‘car chief’, a penalty which will be served at the Sonoma event on June 24.