Genuine BMW F40 1 Series M Performance Spoiler in Gloss Black. Part number is 51192471101. The Genuine BMW F40 1 Series M Performance Spoiler in Gloss Black is a high-quality accessory designed specifically for BMW vehicles. Manufactured by BMW, this performance part is sure to enhance the styling and aerodynamics of the car. Upgrade your vehicle with this sleek and stylish spoiler to make a statement on the road.