BMW G8X G80 G82 M3 M4 Carbon Fiber M Performance Style Rear Center Diffuser

Upgrade the rear-end appearance of your 2021+ BMW G80 M3 or G82 M4 with this M Performance Style Carbon Fiber Rear Center Diffuser. Designed for the G8X platform, this rear diffuser adds a sharper, more aggressive carbon fiber finish to the lower rear bumper area.

The M Performance inspired design enhances the factory rear profile with a more motorsport-focused appearance while maintaining a clean OEM+ fitment approach. This diffuser is designed as a complete replacement for the original plastic center diffuser piece, giving the vehicle a more premium and performance-oriented rear-end look.

Constructed from 100% pre-preg dry carbon fiber in a 2x2 weave, the diffuser is finished with a high-gloss clear coat to highlight the depth and detail of the carbon fiber. Installation is straightforward by removing the OEM diffuser and installing this replacement piece in reverse order.

Product Specifications

Key Features

• Designed for 2021+ BMW G80 M3 and G82 M4 models
• M Performance inspired rear center diffuser design
• Complete replacement for the original plastic rear diffuser piece
• Enhances the rear bumper with a more aggressive OEM+ carbon fiber look
• Constructed from 100% pre-preg dry carbon fiber
• 2x2 carbon fiber weave delivers a premium motorsport-style appearance
• High-gloss clear coat improves carbon fiber depth and surface clarity
• Installs by removing the OEM diffuser and fitting this replacement piece in reverse order

Configuration Options

• High Gloss Carbon Fiber finish
• M Performance Style rear center diffuser design

Package Includes

• One carbon fiber rear center diffuser

Note: This diffuser replaces the original plastic center diffuser piece. Professional installation is recommended to ensure proper alignment and secure fitment.

Installation

• Remove the factory OEM rear center diffuser from the rear bumper
• Install the carbon fiber replacement diffuser in reverse order of removal
• Designed as a complete replacement for the original plastic piece
• Check all mounting areas and alignment before final securing
• Professional installation is recommended for best fitment and finish

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.