What is the bar under the car door called?

[RebeccaAnn]

The bar under the car door is called a side skirt. It is used to reduce the airflow entering the underside of the car from both sides of the body. It has a certain spoiler effect and can significantly reduce air resistance under certain conditions. Here is some information about side skirts: 1. Side Skirt: The side skirt refers to the skirt panels installed on both sides of the car body, and its function is equivalent to that of an air dam, used to reduce the airflow entering the underside of the car from both sides. It has a certain spoiler effect and can significantly reduce air resistance under certain conditions. 2. At High Speed: At high speeds, it acts as if the ground is sucking the chassis, greatly increasing operational stability. It should be used in conjunction with front and rear spoiler skirts and is essential for modifications.