To further enhance the styling and downforce of the rear end of the vehicle Vorsteiner designers have developed a lightweight carbon fiber aero diffuser which bolts onto the factory M3/M4 rear bumpers. Vorsteiner's Autoclaved Pre-Preg Carbon Fiber structure gives parts superior stiffness, aerospace strength & durability compared to traditional hand laid carbon fiber composites.

Features:

• Carbon Fiber structure
• Aerospace Strength & Durability
• 1x1 Carbon Fiber Weave

• BMW F80 M3 2015-2018
• BMW F82 M4 2015-2020

• All Vorsteiner carbon aero programs are TUV certified. Each TUV certified product goes through rigorous testing to ensure that it adheres to the highest ECE regulations.