2019-2022 BMW 3 Series G20&G28 Carbon Fiber Rear Diffuser

Upgrade your 2019-2022 BMW 3 Series G20 or G28 with this BKSS Style Carbon Fiber Rear Diffuser, designed to enhance rear-end styling and aerodynamic presence.

This rear diffuser integrates cleanly with the rear bumper, adding a more aggressive, race-inspired lower profile while improving airflow appearance and visual balance.

Made from high-quality CFRP or FGCF carbon fiber, this diffuser is lightweight, durable, and UV-resistant for long-lasting exterior performance. The integrated LED light adds a distinctive finishing detail to the rear end.

Product Specifications

Key Features

• Designed for 2019-2022 BMW 3 Series G20 and G28 models
• BKSS style rear diffuser adds a bold, race-inspired rear profile
• Carbon fiber construction provides lightweight durability and premium styling
• Available in CFRP and FGCF material options
• UV-resistant finish supports long-lasting exterior performance
• Integrated LED light adds a distinctive visual detail
• Enhances aerodynamic styling, airflow appearance, and rear-end presence

Configuration Options

• CFRP material option
• FGCF material option
• Integrated LED light design

Package Includes

• Carbon fiber rear diffuser
• Integrated LED light

Note: Made-to-order options may require additional production time. Professional installation is recommended for proper alignment, secure mounting, wiring, and best overall fitment.

Installation

• Installs onto the rear bumper area
• LED wiring may be required
• Test fit before final installation
• Proper alignment is required for best fitment and finish
• Professional installation is recommended

Fitment

• 2019-2022 BMW 3 Series G20
• 2019-2022 BMW 3 Series G28

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.