CTM Style Dry Carbon Fiber Diffuser w/ 3rd Brake Light - G80 M3 / G82 M4

Transform the rear of your G8X M3 or M4 with the CTM Style Carbon Fiber Rear Diffuser, featuring an aggressive shark-fin design and an integrated vertical LED third brake light inspired by motorsport styling. This diffuser delivers a bold, track-ready appearance while maintaining a refined OEM+ fit and finish.

Constructed from 100% real dry carbon fiber with a high-quality 3K weave, this diffuser is lightweight, rigid, and finished with a UV-protective clear coat to resist fading over time. The center diffuser replaces the factory unit directly, while the included corner extensions add width and visual aggression to complete the rear-end transformation.

The integrated LED brake light enhances both aesthetics and safety by increasing rear visibility. Wiring is required for the LED function, making professional installation recommended for the best result.

Features

• 100% real dry carbon fiber construction

• CTM shark-fin vortex design for aggressive styling

• Integrated vertical LED third brake light

• Lightweight, rigid, and durable carbon structure

• High-gloss UV-resistant clear coat

• Direct replacement for OEM center diffuser

• Includes carbon fiber corner extensions

• Dramatically improves rear-end appearance and aerodynamics