Audi S3 A3 S Line 8V.1 BKSS Style Rear Diffuser With LED Light 2013-2016

Enhance the rear styling and aerodynamic performance of your 2013–2016 Audi S3 or A3 S Line 8V.1 Sedan with this BKSS style rear diffuser with integrated LED light. Designed to provide a more aggressive and modern rear profile, this upgrade adds both visual impact and functional detail.

Engineered specifically for the 8V.1 platform, this rear diffuser ensures precise fitment and seamless integration with the factory bumper. The BKSS style design improves airflow beneath the vehicle while the integrated LED light adds a performance-inspired motorsport aesthetic.

Constructed from high-quality composite and carbon fiber materials, this diffuser offers durability, lightweight performance, and a premium finish. Multiple material configurations are available, allowing enthusiasts to select the ideal balance between appearance and performance.

Product Specifications

Key Features

• Designed for 2013-2016 Audi S3 and A3 S Line 8V.1 Sedan models
• BKSS style rear diffuser for aggressive and modern styling
• Integrated LED light for motorsport-inspired appearance
• Enhances rear-end aerodynamics and airflow efficiency
• Precision engineered for OEM-style fitment and alignment
• Constructed from high-quality composite and carbon fiber materials
• Available in FRP, CFRP, and FGCF options
• Lightweight construction with strong durability
• UV-resistant clear coat for long-lasting finish protection
• Contours match factory bumper lines for seamless integration
• No major modification required for installation
• Suitable for street, show, and performance builds

Configuration Options

• FRP – Fiberglass construction for cost-effective builds
• CFRP – Full carbon fiber with gloss finish
• FGCF – Fiberglass base with carbon fiber overlay

Package Includes

• Rear diffuser with integrated LED light

Note: Designed for Sedan models only. Electrical wiring required for LED light functionality. Professional installation is recommended.

Installation

• Direct bolt-on installation
• Uses factory mounting points
• Electrical wiring required for LED light
• No cutting required
• Professional installation recommended

Fitment

• 2013-2016 Audi S3 8V.1 Sedan
• 2013-2016 Audi A3 S Line 8V.1 Sedan

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.