BMW M340i G20 G21 Carbon Fiber Competition Rear Diffuser (2019+)

Finish the rear of your BMW 320i, 330i and M340i (G20, G21) with the Carbon Fiber Competition Rear Diffuser, adding aggressive vertical fins and a motorsport-derived lower section that ties the whole rear together.

Key Features

• Material & Finish: Manufactured from genuine carbon fiber with a UV-protected gloss finish for lasting depth and shine.
• Design: Sculpted fin design adds aggression and visual downforce to the rear.
• Precision Fitment: Modelled on OEM geometry for a clean, direct fit with no cutting or trimming required.
• Easy Installation: Fits using factory mounting points and included hardware — a straightforward upgrade.

Fitment

Engineered specifically for the BMW 320i, 330i and M340i (G20, G21). Confirm your exact model and chassis code before ordering.

Why Form Industries

Every Form Industries part is designed for a true OEM-quality fit and finished to last. Ships from our U.S. facility with responsive, enthusiast-run support.

Shipping

Form Industries products ship directly from our U.S. facility in Knoxville, Tennessee for fast, reliable nationwide delivery.