During the race last weekend at Dover, Monster Energy Cup Series points leader Kyle Busch was having difficulties with his in car track bar adjuster. Busch thought that failure of the device to engage would also cause difficulties for him in the race.
Beginning net racing season, those worries will no longer be an issue; NASCAR Senor Vice President of Competition Scott Miller announced that beginning with the 2019 racing season the drivers will no longer have the ability to adjust the car’s track bar within the car.
Miller revealed that it was the drivers themselves who requested the change
Originally introduced into the rules package in 2015, the in car track bar adjuster was intended to allow the drivers to adjust the handling of their cars while on the track making laps. With the change in the rules for next season, only the pit crews during a pit stop will be able to make any track bar adjustments to the cars.