Represents the pinnacle of factory-inspired aerodynamics for the 8th-generation 5 Series. Moving away from the heavier ABS or Polypropylene plastic replicas, a true pre-preg dry carbon fiber variant uses an autoclave-baked manufacturing process. This yields a razor-thin, structurally rigid component that won’t flex or sag under the intense downward wind pressure generated at high track speeds, while shedding significant weight off the front end.