Prepreg Dry Carbon Fiber Rear Diffuser - Porsche 718 Cayman GT4 2020-2023

Upgrade the rear-end aerodynamics and motorsport styling of your Porsche 718 Cayman GT4 with this Prepreg Dry Carbon Fiber Rear Diffuser. Designed specifically around the aggressive rear bumper configuration of the 718 GT4, this lightweight aerodynamic component delivers a more pronounced rear profile while complementing the factory performance-oriented design.

Manufactured from premium prepreg dry carbon fiber using an autoclave curing process, the diffuser provides excellent rigidity, low weight, consistent carbon weave, and a high-quality exposed-carbon finish. Its sculpted channels and integrated fins create a distinctive track-inspired appearance while maintaining precise integration with the GT4 rear bumper and exhaust openings.

Key Specs

Package Includes

• 1 × Prepreg Dry Carbon Fiber Rear Diffuser
• Integrated Rear Diffuser Fins
• Dual Exhaust Openings
• Mounting Hardware, where supplied

Features

• Premium Prepreg Dry Carbon Fiber: Autoclave-cured carbon fiber construction provides excellent rigidity, reduced weight, and a clean, consistent carbon weave.
• GT4-Specific Rear Design: Engineered around the Porsche 718 Cayman GT4 rear bumper configuration for a clean and integrated appearance.
• Aggressive Diffuser Geometry: Sculpted channels and vertical fins give the rear bumper a more pronounced motorsport-inspired profile.
• Aerodynamic Styling: Designed to complement airflow management beneath the rear of the vehicle and reinforce the GT4's track-focused character.
• Integrated Exhaust Openings: Precisely shaped openings accommodate the GT4's rear exhaust layout while preserving a cohesive diffuser design.
• Lightweight Construction: Prepreg carbon fiber keeps additional weight to a minimum while maintaining excellent structural rigidity.
• Premium Gloss Carbon Finish: Exposed carbon weave creates a high-end performance appearance that complements other factory or aftermarket carbon fiber components.
• UV-Resistant Clear Coat: Protective clear coating helps reduce fading, yellowing, and deterioration caused by environmental exposure.
• OEM-Inspired Fitment: Designed to follow the original rear bumper contours for a precise and refined installation.
• Track-Inspired Appearance: Enhances the GT4's rear profile with a wider, lower, and more performance-focused visual stance.

Vehicle Fitment

• Porsche 718 Cayman GT4 - 2020-2023

Fitment Note: Please verify your exact model year, rear bumper configuration, exhaust layout, factory aerodynamic package, and mounting points before ordering. This diffuser is intended for the Porsche 718 Cayman GT4 rear bumper configuration.

Installation

Professional installation by an experienced Porsche or performance body shop is strongly recommended. The diffuser should be test-fitted before final installation to verify alignment around the bumper edges, exhaust outlets, underbody panels, and mounting locations.

Installation is designed around the factory rear bumper mounting areas, although minor adjustment may be required depending on vehicle specification and production tolerances.

Care Guide

Regular Cleaning: Clean the carbon fiber diffuser regularly using a soft microfiber cloth with mild soap and water. Avoid abrasive cleaners or harsh chemicals that may damage the clear coat.

Use Microfiber Pads and Cloths: Use clean microfiber materials when washing, drying, polishing, or applying protective coatings to minimize surface scratches.

Protect From Sun and Chemicals: Avoid prolonged exposure to aggressive chemicals and excessive sunlight whenever possible to preserve the carbon fiber weave and protective clear coat.

• Prepreg Dry Carbon Fiber Construction
• Autoclave-Cured Carbon Fiber
• Integrated Rear Diffuser Fins
• Dual Exhaust Openings
• Lightweight Construction
• Gloss Carbon Fiber Finish
• UV-Resistant Clear Coat
• GT4-Specific Rear Fitment
• Motorsport-Inspired Styling
• Rear Lower Bumper Installation