BMW M5 F90 Carbon Fibre Rear Diffuser by FORM (2017-2023)

Redefine the rear presence of your BMW M5 F90 with the Carbon Fibre Rear Diffuser from FORM. This precision-moulded diffuser replaces the OEM lower rear trim to enhance underbody air extraction, reduce rear lift, and deliver the kind of aggressive visual stance normally reserved for factory performance editions.

Key Features:

• Direct OEM fitment — retains factory mounting points, wiring connectors, and sensor cut-outs where applicable
• Lightweight carbon fibre construction with a UV-protected gloss clear coat
• Aggressive vertical fins add visual width and motorsport presence
• Direct-fit replacement for the OEM lower rear bumper section
• Improves underbody air extraction for reduced rear lift and improved stability
• Backed by FORM Industries — a trusted name in OEM-level aftermarket upgrades for modern performance cars

Materials & Construction: Manufactured from high-grade carbon fibre with a UV-stable clear coat, this component combines lightweight construction with the distinctive weave finish that defines performance-car styling.

Fitment: This product is designed specifically for the BMW M5 F90, model years 2017-2023. It integrates with the factory panel lines, mounting points, and (where applicable) electronic systems, meaning no cutting, drilling, or bodywork modification is required for a standard install. Please double-check your chassis code against the listed fitment before ordering — if you're unsure, our support team is happy to confirm compatibility for your exact vehicle.

Installation: Fitment is straightforward for an experienced installer using standard hand tools. We strongly recommend installation by a qualified bodyshop or detailer, particularly for exterior components that require panel alignment, adhesive bonding, or painted-surface preparation. Full fitment guidance is provided in the box, and our support team can help confirm the best approach for your specific car.

Why FORM Industries: FORM has built a reputation among serious owners of BMW, Audi, and other modern performance cars by obsessing over the details most aftermarket brands skip — panel gap tolerances, UV-stable finishes, genuine pre-preg composite processes rather than cheaper wet-layup shortcuts, and in-house fitment testing on real cars rather than CAD models alone. The result is a range of parts that install like factory equipment and hold up the way factory equipment should.