2014 - 2021 Mercedes Benz C217 S63 & S65 AMG Coupe BKSS Style Carbon Fiber Rear Diffuser

Upgrade the rear-end profile of your Mercedes-Benz S-Class Coupe C217 with this BKSS Style Carbon Fiber Rear Diffuser. Designed to add aggressive performance-inspired styling, this rear diffuser gives the S63 AMG and S65 AMG Coupe a sharper, lower, and more dynamic rear appearance.

The carbon fiber rear diffuser design enhances the rear bumper area with stronger aerodynamic presence and motorsport-inspired visual impact. Whether used as a standalone upgrade or paired with additional carbon fiber exterior components, this diffuser helps complete a bold and refined AMG coupe build.

Crafted from high-quality CFRP, FGCF, and DryCF material options, this rear diffuser delivers lightweight construction, durable exterior appeal, and a premium carbon fiber finish. Designed for 2014-2021 Mercedes-Benz C217 S63 AMG and S65 AMG Coupe models, each package includes one carbon fiber rear diffuser.

Product Specifications

Key Features

• BKSS Style carbon fiber rear diffuser designed for the Mercedes-Benz C217 S63 AMG and S65 AMG Coupe
• Designed for 2014-2021 Mercedes-Benz C217 S63 AMG and S65 AMG Coupe models
• Adds a lower, sharper, and more aggressive rear-end appearance
• Enhances the rear bumper area with premium carbon fiber styling
• Available in CFRP, FGCF, and DryCF material options
• Lightweight construction with durable exterior appeal
• Designed to improve aerodynamic presence and drag-reduction appearance
• Complements the factory AMG coupe body lines
• Ideal for street, track, or show-focused exterior builds
• Includes one carbon fiber rear diffuser

Configuration Options

• Material Option: Available in CFRP, FGCF, and DryCF material options
• Rear Diffuser Setup: Designed to enhance the Mercedes-Benz C217 lower rear bumper area
• Aerodynamic Styling: Adds a performance-inspired rear accent with aggressive exterior character
• Carbon Fiber Finish: Premium carbon fiber material options add lightweight strength and refined exterior styling
• 2018-2021 Fitment Requirement: Requires additional purchase of the OEM-style rear diffuser for proper fitment

Package Includes

• One carbon fiber rear diffuser

Note: For 2018-2021 models, installation requires the additional purchase of the OEM-style rear diffuser for proper fitment. Professional installation is recommended for best alignment and secure fitment. Test fitting is recommended before final installation.

Installation

• Designed for installation on the lower rear bumper diffuser area
• Professional installation is recommended for proper alignment and secure mounting
• Test fitting is recommended before final installation
• Some adjustment may be required during installation for best results
• Proper diffuser alignment, mounting points, and bumper clearance should be checked during installation

Fitment

• 2014-2017 Mercedes-Benz S63 AMG Coupe C217
• 2014-2017 Mercedes-Benz S65 AMG Coupe C217
• 2018-2021 Mercedes-Benz S63 AMG Coupe C217 requires additional purchase of the OEM-style rear diffuser
• 2018-2021 Mercedes-Benz S65 AMG Coupe C217 requires additional purchase of the OEM-style rear diffuser

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.