BMW PSM Style 4PC Carbon Fiber Diffuser W/LED Brake Light - F80 M3 / F82/83 M4

BMW F8X M3 / M4 PSM Style Carbon Fiber Diffuser w/ LED Brake Light – 4PCS

Give your BMW a bold and aggressive rear-end transformation with the PSM Style Carbon Fiber Rear Diffuser, designed specifically for the BMW F80 M3 and F82/F83 M4 (2015–2020). Inspired by the iconic PSM design, this diffuser enhances aerodynamics, adds an unmistakable motorsport presence, and integrates seamlessly with the factory rear bumper.

Constructed from high-quality 2x2 carbon fiber weave, this diffuser is both lightweight and durable, finished with a gloss UV-protected clear coat to prevent fading, cracking, or yellowing over time. The design features large, sculpted fins for aggressive styling and improved airflow, paired with an integrated LED F1-style brake light for added visibility and performance flair.

This 4-piece set includes the center diffuser, side extensions, and integrated LED light, ensuring a complete OEM+ fitment upgrade.

Key Features

• PSM-Inspired Styling – bold and aggressive design with pronounced fins.

• Integrated LED F1-Style Brake Light – adds a race-inspired touch and increased visibility.

• 4-Piece Set – includes main diffuser, side extensions, and LED light.

• Premium Carbon Fiber – lightweight, strong, and finished with a gloss UV coating.

• Aerodynamic Upgrade – improves airflow and enhances rear-end styling.

• OEM Fitment – designed specifically for F80 M3 and F82/F83 M4 models.

Specifications

• Material: 2x2 Carbon Fiber Weave

• Finish: Gloss clear coat (UV resistant)

• Pieces: 4 (center diffuser, two side extensions, LED brake light)

• Fitment: BMW F80 M3 / F82 M4 / F83 M4 (2015–2020)

• Installation: Direct replacement; wiring required for LED light

Installation

• Direct bolt-on installation.

• Professional installation recommended for precise fitment and wiring of the LED brake light.