


Carbon Fiber Rear Diffuser - Porsche Cayenne Sport 2018-2019
The Carbon Fiber Rear Diffuser for the Porsche Cayenne Sport (2018-2019) is a high-performance upgrade that enhances both the aesthetics and aerodynamics of your vehicle. Crafted from premium carbon fiber, this rear diffuser offers a race-inspired design that improves airflow, reduces drag, and increases downforce, all while giving your Porsche Cayenne Sport a more aggressive, motorsport-inspired appearance. Whether you're looking to enhance your driving experience or simply elevate your vehicle's look, this rear diffuser is the perfect addition.
Key Features:
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Premium Carbon Fiber Construction: The Carbon Fiber Rear Diffuser is made from top-grade carbon fiber, which is known for its excellent strength-to-weight ratio. This lightweight material offers exceptional durability while minimizing weight, making it an ideal choice for automotive performance parts. The carbon fiber is woven for a sleek, glossy finish that adds both strength and a high-end appearance to your Porsche Cayenne Sport.
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Enhanced Aerodynamics: The primary function of the rear diffuser is to improve the vehicle's aerodynamics by reducing drag and optimizing airflow beneath the car. The diffuser helps to channel air smoothly underneath, increasing stability and downforce at higher speeds. This results in better traction, more precise handling, and a more planted feel on the road, especially during aggressive driving or high-speed maneuvers.
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Aggressive, Motorsport-Inspired Aesthetic: With its bold lines and high-performance carbon fiber finish, the Carbon Fiber Rear Diffuser adds a sporty, aggressive look to your Porsche Cayenne Sport (2018-2019). The glossy carbon fiber texture highlights the rear end of your vehicle, giving it a race-ready appearance that enhances its overall dynamic profile.
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Perfect Fitment: Specifically designed for the Porsche Cayenne Sport (2018-2019), this rear diffuser ensures a perfect fit. The precise engineering ensures that the diffuser integrates seamlessly with the vehicle’s rear bumper without the need for modifications. The OEM-level fitment ensures the diffuser aligns perfectly with your vehicle’s body lines for a clean, polished look.
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UV-Resistant Clear Coat: To maintain the stunning appearance of the Carbon Fiber Rear Diffuser, it is coated with a UV-resistant clear coat. This layer helps prevent the carbon fiber from fading, discoloring, or oxidizing due to prolonged sun exposure, keeping the diffuser looking like new for years.
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Durable and Lightweight: Carbon fiber is highly durable, able to withstand road debris, impacts, and harsh weather conditions while remaining lightweight. This ensures that the Carbon Fiber Rear Diffuser not only improves the vehicle's performance but also stands up to the rigors of daily driving, maintaining its functionality and appearance over time.
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Improved Stability and Handling: The aerodynamic benefits of the rear diffuser contribute to the stability of your Porsche Cayenne Sport at higher speeds. By creating additional downforce, the diffuser helps to reduce lift at the rear, ensuring the car stays more planted on the road. This improves traction, cornering stability, and overall handling, giving you more control during spirited driving.
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Easy Installation: The Carbon Fiber Rear Diffuser is designed for easy installation with all necessary hardware included. It fits seamlessly into place without requiring modifications to your vehicle, allowing for a straightforward upgrade process. The perfect fitment ensures that the diffuser will look great and perform well without any hassle.
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Customizable Appearance: The carbon fiber finish can be paired with other carbon fiber parts, such as side skirts, front lips, or roof spoilers, to create a fully cohesive, motorsport-inspired appearance. Whether you're looking to enhance the aggressive styling or create a more refined look, the Carbon Fiber Rear Diffuser can be customized to suit your style.
(not Fit for Coupe)
We want you to have our parts as quickly as possible. Products that are in stock will be shipped and delivered domestically in 1–5 business days. It will take seven to twenty-one business days for international shipment. An email confirming that your order is being completed will be sent to you once you place it. For in-house orders, please allow a day for processing and the updating of the tracking number. The product page accurately shows the quantity.
Custom steering wheels typically take 20-25 business days for production, with an additional 5-7 business days for shipping. Production and delivery times may vary depending on the complexity of the order and the shipping destination. For more details, please refer to our Shipping Policy.
Our Return Policy permits returns only for products that are found to be defective. You have 30 days from the date of delivery to inspect the product and report any issues.
Regular Cleaning: Maintain carbon fiber parts by cleaning them regularly with a soft cloth and a mixture of mild soap and water. Avoid abrasive or harsh cleaners that could harm the finish.
Use Microfiber Pads and Cloths: Opt for microfiber pads and cloths when cleaning or applying protective coatings to prevent surface scratches.
Protect from Sun and Chemicals: Limit exposure to direct sunlight and harsh chemicals, as they can damage carbon fiber. When possible, use protective covers or park your vehicle in shaded areas.

Why Thousands of Enthusiasts Trust Us
Carbon Industries delivers premium, precision-engineered parts that elevate Vehicle performance and style—backed by expert support and a true passion for the culture. We don’t just sell parts; we fuel the lifestyle.
- Guaranteed Fitment for Your BMW: No guesswork—our parts are designed and tested to fit your exact model perfectly.
- Premium Materials, Always: We use only high-grade carbon fiber, forged metals, and performance-tested components.
- White-Glove Customer Support: Our team of BMW specialists is here to guide you with expert, concierge-level care.
- Trusted by the Elite Vehicle Community: From daily drivers to show builds, our parts are featured on some of the cleanest builds worldwide.

Let customers speak for us
FAQ
Will these parts fit my specific Vehicle model and year?
Yes — every product page includes a “Will This Fit” section to ensure compatibility. If you’re unsure, just send us your VIN or model/year, and our team will confirm fitment for you within 24 hours. We specialize in BMW and European vehicles, so you’re in good hands.
Are these genuine carbon fiber or carbon fiber overlay parts?
We offer only full carbon fiber options. Each listing clearly specifies the construction material. Rest assured, we only source high-quality parts that are durability-tested and made to OEM or better standards.
How long does shipping take and where do you ship from?
Most orders ship from our Irvine, CA warehouse within 1–3 business days. Domestic delivery typically takes 3–7 business days. International shipping times vary by country. Each product page includes real-time shipping estimates based on your location. Certain made to order products will take up to 3-4 weeksfor delivery, including production time.
Do I need professional installation or can I install it myself?
Many of our mods are designed for direct bolt-on installation and can be installed at home with basic tools. However, for certain parts like aero kits or performance components, we recommend professional installation for best results. Each product page includes install difficulty and notes. We offer professional installation at our Santa Clara, CA location.
What if the product doesn’t fit or I change my mind?
No worries — we offer hassle-free returns within 30 days of delivery. If the part doesn’t fit due to an error on our end, we’ll cover the return shipping. For all other returns, we make it easy to exchange or get a refund. See our full Returns & Warranty Policy for details.
Are your parts tested for quality and durability?
Absolutely. All of our products go through quality control checks and are either TUV-certified, ISO-certified, or tested by our in-house team and verified installers. We don’t sell anything we wouldn’t put on our own cars.
Do you offer warranties on your parts?
Yes. Most of our products come with a 90-day limited warranty against manufacturing defects. Some premium items offer extended warranties — details are listed on the product pages. We’re committed to quality and stand behind what we sell.
Can I finance or pay in installments?
Yes — we offer Shop Pay, Affirm, AfterPay, and Klarna at checkout. You can split your purchase into 4 interest-free payments or choose longer-term plans if needed. It’s quick, easy, and won’t affect your credit score (in most cases)