A Chevrolet Bel Air Rear bumper is also called as Bel Air custom rear bumper or bumper cover. It is a part that is made of plastic and is attached to the lower rear area of the car. For the Chevy Bel Air rear bumper or bumper cover, there are lots of aftermarket options. They are available in many different quality and designs. They are made of high quality of ABS plastic, fiber glass or carbon fiber. They reduce the after effects of crashes. The carbon fiber rear bumpers are not a very god option for the Chevy Bel Air replacement bumpers.