W-POWER, Real Carbon Fiber V-Style Lift Gate Duckbill Trunk Spoiler Wing For 2006 - 2011 BMW (E90) 3-Series 325i 323i 328i 330i 335i / M3 Sedan Best Quality W-POWER Rear Trunk Lid Spoiler Wing and Side Mirror Cover that are Made of real carbon fiber (3K) with stylish design. It is coated inside and out with an acrylic UV protection system. A second layer coating is also applied using traditional spray methods, in order to create a smooth and high gloss finish. Great Appearances W-POWER V-Style Rear Spoiler Wing not only if will gives you great appearances, it will also help with aerodynamics of your car by lowering drag, or helping with generating more down force, this maximize its contact with the ground for maximum traction and grip to increase stability Maintain Traction The main advantage of installing a spoiler on a vehicle is to help the car maintain traction at very high speeds. The rear spoiler pushes the rear of the vehicle down, allowing the tire to better grip the road and increase driving stability Racing Look Installing spoilers as a fashion accessory and it really do a pretty good job of completing the rear and making a vehicle look great