If you love all things carbon fiber then this BMW 330i/M340i Carbon Fiber Roof Antenna Cover is the perfect finishing touch for your BMW G20/G21 3-Series. Our carbon fiber antenna covers are simply installed over your antenna via 3M tape and promoter. Each piece is crafted from 100% genuine carbon fiber and completed with a UV-resistant clear coat which ensures they remain vibrant for years to come. Please Note: This carbon fiber antenna cover may affect some XM signals.