Porsche 718 Cayman Boxster 982 Stuttmate Carbon Fiber Rear Diffuser 2016-2025

Enhance the rear styling and aerodynamic performance of your 2016-2025 Porsche 718 Cayman or Boxster with this Stuttmate carbon fiber rear diffuser. Designed to complement the sporty and aggressive design of the 982 platform, this upgrade adds a more performance-focused rear profile while maintaining OEM-style integration.

Precision engineered for seamless fitment, this rear diffuser is crafted to align with the factory rear bumper contours of both Cayman and Boxster models. The aerodynamic design improves airflow beneath the vehicle while enhancing rear-end definition and delivering a more planted and track-inspired stance.

Constructed using high-quality composite and carbon fiber materials, this diffuser offers durability, lightweight performance, and premium finish quality. Available in multiple material options, it is ideal for enthusiasts seeking an OEM+ upgrade that enhances both aesthetics and aerodynamic efficiency.

Product Specifications

Key Features

• Designed for 2016-2025 Porsche 718 Cayman and Boxster (982)
• Stuttmate style rear diffuser for aggressive styling
• Constructed from high-quality composite and carbon fiber materials
• Available in FRP, carbon fiber, forged carbon fiber, and dry carbon fiber finishes
• Enhances rear aerodynamics and airflow management
• Improves lower rear bumper definition and sporty appearance
• Precision engineered for OEM-style fitment and seamless integration
• Lightweight construction for improved performance characteristics
• Suitable for street, show, and performance builds

Configuration Options

• FRP – Durable and cost-effective option
• Carbon Fiber (CFRP) – Classic carbon weave finish
• Forged Carbon Fiber – Unique modern pattern
• Dry Carbon Fiber – Lightweight premium finish

Package Includes

• Rear diffuser

Note: Professional installation is recommended to ensure proper alignment and secure mounting.

Installation

• Direct replacement installation
• Uses factory mounting points
• No cutting required
• No drilling required
• Professional installation recommended

Fitment

• 2016-2025 Porsche 718 Cayman (982)
• 2016-2025 Porsche 718 Boxster (982)

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.