A nerf bar is a device used to protect a racecar from collisions on the road. It is applied to the vehicle’s side and stops tires from getting entangled. The need for the nerf bar takes place when a driver speeds up quickly and risks losing control over the vehicle. The nerf bar helps minimize bumping and prevent damage. Other common applications of the nerf bard refer to the situations where a car is going over rough and rocky ground. In that case, the purpose of the nerf bar is to act like a bull bar that safeguards an off-road vehicle. The nerf bar can be fitted to both the frame and the body depending on the situation.