BMW G8X G80 G82 M3 M4 Carbon Fiber 3D Design Style Rear Center Diffuser

Upgrade the rear-end appearance of your 2021+ BMW G80 M3 or G82 M4 with this 3D Design Style Carbon Fiber Rear Diffuser. Designed for the G8X M platform, this rear diffuser adds a sharper and more aggressive lower rear profile while enhancing the vehicle’s performance-inspired styling.

The 3D Design Style diffuser is a complete replacement for the original plastic diffuser and diffuser outer trim. Its extended carbon fiber design gives the rear bumper a more finished and premium look while maintaining a clean factory-style fitment approach.

Constructed from 100% pre-preg dry carbon fiber with a 2x2 weave, this rear diffuser features a high-gloss clear coat finish for a refined exterior appearance. Installation is straightforward by removing the OEM diffuser and outer trim, then installing this replacement in reverse order.

Product Specifications

Key Features

• Designed for 2021+ BMW G80 M3 and G82 M4 models
• 3D Design Style rear diffuser enhances the lower rear bumper profile
• Complete replacement for the original plastic diffuser
• Also replaces the OEM diffuser outer trim
• Constructed from 100% pre-preg dry carbon fiber
• 2x2 carbon fiber weave with high-gloss clear coat finish
• Adds a sharper, more aggressive rear-end appearance
• Designed for clean fitment using the OEM diffuser removal process

Configuration Options

• 3D Design Style dry carbon fiber rear diffuser for BMW G80 M3 and G82 M4 models

Package Includes

• Carbon fiber rear center diffuser
• Carbon fiber diffuser outer trim replacement

Note: This diffuser replaces both the OEM plastic diffuser and OEM diffuser outer trim. Professional installation is recommended to ensure proper alignment, secure fitment, and the best overall finish.

Installation

• Remove the factory rear diffuser
• Remove the OEM diffuser outer trim
• Test fit the carbon fiber diffuser before final installation
• Install the replacement diffuser in reverse order of removal
• Check alignment and mounting points before final securing
• Professional installation is recommended for best results

Fitment

• 2021+ BMW G80 M3
• 2021+ BMW G82 M4

United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.

Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.  

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
• DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
• Lens Replacements: 1-3 weeks plus shipping time.

Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.