2017 - 2019 Porsche 911 991.2 GT3 Only BKSS Style Carbon Fiber Rear Lip Diffuser

Enhance the rear end of your Porsche 911 991.2 GT3 with this BKSS Style Carbon Fiber Rear Lip Diffuser. Designed specifically for GT3 applications, this rear diffuser adds a sleek and aggressive motorsport-inspired finish while complementing the vehicle’s performance-focused rear profile.

Made from advanced CFRP, FGCF, DryCF, or MTCF material options, this rear lip diffuser delivers lightweight construction, strong durability, and premium finish quality. Its aerodynamic design helps optimize airflow styling beneath the vehicle while supporting reduced drag presence and improved high-speed stability character.

Engineered for 2017-2019 Porsche 911 991.2 GT3 models only, this rear diffuser is an ideal upgrade for enthusiasts seeking a refined carbon fiber rear-end enhancement with both visual impact and functional performance styling.

Product Specifications

Key Features

• Designed specifically for 2017-2019 Porsche 911 991.2 GT3 models
• BKSS Style rear lip diffuser for a sleek and aggressive rear-end upgrade
• Enhances rear styling with a motorsport-inspired appearance
• Supports optimized underbody airflow styling, reduced drag presence, and improved high-speed stability character
• Made from premium CFRP, FGCF, DryCF, or MTCF material options
• Lightweight construction with strong durability and premium finish quality
• Designed for precise fitment on GT3 applications
• Ideal for enthusiasts seeking both form and function
• Designed for GT3 models only

Configuration Options

• CFRP
• FGCF
• DryCF
• MTCF
• BKSS Style rear lip diffuser design
• 991.2 GT3-only fitment layout

Package Includes

• One rear diffuser

Note: Designed for Porsche 911 991.2 GT3 models only. Professional installation is recommended to ensure proper fitment, rear diffuser alignment, bumper clearance, mounting security, and finish.

Installation

• Confirm 991.2 GT3 fitment before installation
• Inspect the rear bumper and diffuser mounting area before fitting the component
• Clean all mounting surfaces thoroughly before installation
• Test fit the rear lip diffuser before final installation
• Verify alignment with the rear bumper, lower fascia, exhaust area, and surrounding body lines
• Confirm mounting security, panel clearance, and diffuser clearance before final adjustment
• Professional installation recommended for best fitment and finish

Fitment

• 2017-2019 Porsche 911 991.2 GT3

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.