BMW 4 Series G22 G23 Carbon Fiber Competition Rear Diffuser Set (2020+)

The Carbon Fiber Competition Rear Diffuser Set transforms the rear valance of your BMW 420i, 430i, 440i and M440i (G22, G23) with a sculpted, race-style diffuser profile.

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 420i, 430i, 440i and M440i (G22, G23). Confirm your exact model and chassis code before ordering.

Why Form Industries

Form Industries builds exterior and interior upgrades that fit right the first time — quality materials, precise tolerances, and U.S.-based dispatch and support.

Shipping

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