Audi RS6 Avant C8 RS7 Quattro BKSS Style Carbon Fiber Rear Diffuser 2019-Up

Enhance the rear styling and aerodynamic presence of your 2019-Up Audi RS6 Avant C8 or RS7 Quattro with this BKSS Style carbon fiber rear diffuser. Designed to replace or upgrade the factory rear lower section, this diffuser adds a more aggressive and performance-focused appearance while maintaining seamless OEM-style integration.

The BKSS style design features bold contours and an integrated LED light, creating a more dynamic and race-inspired rear profile. Engineered specifically for the RS6 Avant and RS7 Quattro platforms, this diffuser improves visual depth and complements the vehicle’s sporty character.

Constructed from high-quality carbon fiber materials, this rear diffuser offers lightweight strength, durability, and a premium finish. Available in multiple material options, it is ideal for enthusiasts seeking both enhanced styling and modern performance aesthetics.

Product Specifications

Key Features

• Designed for 2019-Up Audi RS6 Avant C8 and RS7 Quattro
• BKSS style rear diffuser for aggressive rear-end styling
• Integrated LED light for modern performance-inspired appearance
• Enhances rear aerodynamics and visual depth
• Precision engineered for OEM-style fitment and alignment
• Constructed from high-quality carbon fiber materials
• Lightweight and durable construction
• Available in multiple material and finish options
• Improves rear bumper definition and sporty stance
• Ideal for street, show, and performance builds

Configuration Options

• CFRP – Standard carbon fiber construction with gloss finish
• FGCF – Fiberglass base with carbon fiber overlay
• Dry Carbon Fiber – Lightweight pre-preg carbon fiber with premium weave quality

Package Includes

• Rear diffuser with LED light

Note: Professional installation is recommended to ensure proper alignment and correct wiring of the integrated LED light.

Installation

• Direct replacement installation
• May require wiring for LED light
• Professional installation recommended

Fitment

• 2019-Up Audi RS6 Avant C8
• 2019-Up Audi RS7 Quattro

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.