







Paktechz Prepreg Dry Carbon Fiber Rear Diffuser - Mercedes Benz W118 C118 CLA Class AMG CLA35 CLA45S
The Paktechz Prepreg Dry Carbon Fiber Rear Diffuser is a high-performance aerodynamic and styling upgrade designed for the Mercedes-Benz W118 C118 CLA Class, including the AMG CLA35 and CLA45S models. Crafted using advanced prepreg dry carbon fiber technology, this rear diffuser not only enhances your vehicle’s aggressive styling but also improves aerodynamics, increasing downforce and stability at higher speeds for better overall handling.
Key Features:
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Prepreg Dry Carbon Fiber Construction: Made from premium prepreg dry carbon fiber, this rear diffuser offers unmatched strength, durability, and a lightweight design. The use of dry carbon fiber ensures the diffuser is not only visually stunning but also resistant to wear and tear, maintaining its high-quality finish over time.
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Enhanced Aerodynamics: The rear diffuser optimizes the airflow beneath the vehicle, reducing turbulence and increasing rear-end downforce. This improved airflow reduces lift, contributing to better stability and handling, especially at high speeds or during aggressive driving, ensuring enhanced performance on both the road and track.
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Aggressive, Race-Inspired Styling: With its sleek and bold design, the rear diffuser adds a track-ready, sporty look to the Mercedes-Benz CLA Class. The carbon fiber finish and aerodynamic profile give your vehicle an aggressive and dynamic rear-end appearance that elevates its overall design and emphasizes its performance-driven character.
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Perfect Fitment: Specifically designed for the Mercedes-Benz W118 C118 CLA Class, including the AMG CLA35 and CLA45S, the rear diffuser ensures a perfect fit without the need for modifications. It comes with all the necessary hardware for easy installation, providing a seamless and hassle-free upgrade.
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UV-Resistant Coating: The rear diffuser is finished with a UV-resistant clear coat that protects the carbon fiber from fading, discoloration, and oxidation. This ensures the diffuser maintains its striking appearance and high-quality finish for years, even when exposed to the sun’s harmful rays.
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Lightweight & Durable: The prepreg dry carbon fiber is incredibly lightweight yet strong, reducing overall vehicle weight without sacrificing durability. This construction allows for superior performance benefits while maintaining the diffuser’s structural integrity even under tough driving conditions.
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Improved Rear-End Protection: The rear diffuser not only improves aerodynamics but also helps protect the rear bumper area from road debris, rocks, and other potential hazards, ensuring your vehicle stays protected while looking great.
Upgrade your Mercedes-Benz W118 C118 CLA Class, AMG CLA35, or CLA45S with the Paktechz Prepreg Dry Carbon Fiber Rear Diffuser to enhance both its performance and appearance. Experience improved aerodynamics, increased stability, and a more aggressive rear-end look that will elevate your driving experience to a whole new level.
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)








