BMW 4 Series Gran Coupe G26 Pre-Preg Carbon Fiber Rear Diffuser Set (2021+)

The Pre-Preg Carbon Fiber Rear Diffuser Set transforms the rear valance of your BMW 430i, i4 and M440i (G26) with a sculpted, race-style diffuser profile.

Key Features

• Material & Finish: Manufactured from genuine pre-preg 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 430i, i4 and M440i (G26) (2021+). 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.