RW Carbon BMW F8x M3 M4 Kholen Style CF Rear DiffuserThis new Kholen Style carbon fiber rear diffuser is the perfect piece to add that race inspired feel to your BMW F80 M3 or F82 F83 M4. This diffuser comes with a real working LED 3rd brake light that will work with your brake lights. A wiring harness and install guide will be included with every diffuser. The Kholen style diffusers are made using our same genuine 2x2 carbon fiber fabric as our other M3 M4 parts. Each piece is clear coated for that