Fitting is as simple as removing the original plastic diffuser and fitting carbon diffuser the same way using original screw bolts. However, we recommend fitment by a professional body shop to ensure optimum fit. The item "BMW M3 M4 Carbon Fiber Rear Diffuser F80 F82 F83 M Performance" is in sale since Saturday, January 19, 2019. This item is in the category "Vehicle Parts & Accessories\Car Tuning & Styling\Body & Exterior Styling\Bumpers". The seller is "carbon-styles" and is located in Rotherham.This item can be shipped to United Kingdom.