The Carbon Lab
GT4 Style Conversion Carbon Fiber Rear Diffuser - Porsche 718 Boxster / Cayman 2017-2021
GT4 Style Conversion Carbon Fiber Rear Diffuser - Porsche 718 Boxster / Cayman 2017-2021
Couldn't load pickup availability
Free Shipping Worldwide
Financing Available
14 day Return
Description
Description
Transform the rear profile of your Porsche 718 Boxster or Cayman with this GT4 Style Conversion Carbon Fiber Rear Diffuser. Designed to create a more aggressive, motorsport-inspired appearance, this conversion diffuser replaces the factory lower rear section with a sculpted GT4-style layout featuring pronounced aerodynamic fins and revised exhaust openings.
Constructed from carbon fiber, the diffuser combines lightweight construction with a distinctive exposed weave finish. Its deep outer channels, vertical fins and integrated exhaust surrounds give the 718 a wider and more track-focused rear stance while complementing the factory bumper design.
Key Specs
| Material | Carbon Fiber |
|---|---|
| Product Type | Rear Diffuser Conversion |
| Design | GT4 Style |
| Fitment | Porsche 718 Boxster / Cayman |
| Model Years | 2017-2021 |
| Location | Rear Bumper |
| Exhaust Configuration | Dual Side Outlet GT4-Style Layout |
| Condition | Brand New |
Features
- GT4-Inspired Conversion: Reworks the lower rear bumper area with a more aggressive diffuser profile inspired by Porsche GT models.
- Carbon Fiber Construction: Lightweight carbon fiber provides a premium motorsport appearance with visible weave detailing.
- Pronounced Diffuser Fins: Sculpted vertical fins create a deeper, more performance-focused rear profile.
- Dual Exhaust Openings: GT4-style side exhaust locations create a more symmetrical and aggressive rear-end appearance.
- Aerodynamic Styling: The extended lower profile and diffuser channels are designed to improve airflow management beneath the rear of the vehicle.
- Vehicle-Specific Shape: Designed around the rear bumper geometry of the Porsche 718 Boxster and Cayman.
- Motorsport-Inspired Appearance: Adds a lower, wider and more purposeful stance to the rear of the vehicle.
- Compatible With Additional Carbon Upgrades: Pairs well with carbon fiber side skirts, spoilers and other exterior aerodynamic components.
Fitment
- Porsche 718 Boxster - 2017-2021
- Porsche 718 Cayman - 2017-2021
Exhaust Option Note
If the diffuser is ordered without exhaust tips, modification of the vehicle's existing exhaust tips will be required to accommodate the GT4-style diffuser configuration.
Installation
Installation requires removal of the factory lower rear diffuser section and correct alignment of the replacement conversion diffuser with the rear bumper and exhaust outlets.
Professional installation is recommended, particularly when exhaust positioning or tip modification is required. Test-fit all components before completing permanent installation.
Production & Shipping
- Lead Time: 2 weeks
- Delivery: 1 week
- Returns: Allowed within 10 days after delivery
- Replacements: Only for items damaged on arrival
Care Guide
Regular Cleaning: Clean the carbon fiber surface regularly using a soft microfiber cloth with mild soap and water. Avoid abrasive cleaners or harsh chemicals that may damage the finish.
Use Microfiber Cloths: Use clean microfiber towels when washing, drying or applying protective coatings to minimize the risk of surface scratches.
Inspect Mounting Points: Periodically inspect the diffuser, mounting hardware and exhaust clearance to ensure all components remain securely positioned.
Protect From Sun and Chemicals: Minimize prolonged exposure to harsh chemicals and excessive direct sunlight whenever possible to help preserve the carbon fiber finish.
Features
Features
