In development for roughly a year, a Wednesday NASCAR Cup Series rule book update includes the formal introduction and mandating of a new A-post flap for races at Daytona, Talladega and Atlanta ...

Photo credit: Nigel Kinrade Photography NASCAR has updated the superspeedway aero package in an effort to keep cars from flipping. The sanctioning body has introduced an A-Post flap for Cup Series ...

- NASCAR may be adding a new aerodynamic safety feature to the Next Gen car — an A-post flap — with its first appearance rumored to be at the 2025 Coke Zero Sugar 400 at Daytona.

Texas Rangers second baseman Marcus Semien stayed in the game and scored on a go-ahead single after a 94.6 mph fastball hit ...

The flaps will be held down by magnets, which are connected to the flaps via cables. Once the longstanding roof flap on the car is deployed once a car spins, the cable will pull the A-post flap open.