Maxton Design's gloss black rear diffuser for the pre-facelift BMW G29 Z4 M Sport Roadster makes the rear of the car look more aggressive with a unique aero design. We highly recommend pairing this central diffuser with Maxton Design's rear side splitters to complete the look. This rear splitter was designed using 3D scanning technology to ensure a perfect fit. The premium gloss black finish is very sleek and the lacquer is highly resistant to corrosion for long-term style.