When driving your car at high speed, the air flows through the upper and lower surfaces of the tail wing to create a pressure difference, forming downward pressure, offsetting some of the lift, increasing the vehicle's adhesion to the ground, reducing the drag coefficient, and improving driving stability. Effectively control your vehicle's upward movement, allowing it to closely adhere to the road surface while driving, reducing the phenomenon of drifting at high speeds, thereby improving handling and safety, and to some extent enhancing fuel economy. Upgrade the level of your car and enhance its sportiness. Using imported high-quality materials, with strong weather resistance, no fading, no chemical test, original car style, dedicated for special vehicles. Compatible For BMW Z4 E89 Convertible Coupe 2009-2016 Real Carbon Fiber Rear Trunk Lid Boot Ducktail Lip Spoiler Wings Car Accessories Part Compatible For BMW Z4 E89 Convertible Coupe 2009-2016 Real Carbon Fiber Rear Trunk Lid Boot Ducktail Lip Spoiler Wings Car Accessories Part
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