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Asign Real Carbon Fiber Rear Diffuser Air Deflector For B9.5 2020-2024 Audi A4/S4

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Asign Real Carbon Fiber rear diffuser air deflector For 2020-2024 B9.5 Asign Real Carbon Fiber rear diffuser air deflector For B9.5 2020-2024 Audi A4/S4 Asign Real Carbon Fiber rear diffuser air deflector For B9.5 2020-2024 Audi A4/S4 Asigncar Real Carbon Fiber rear diffuser air deflector For B9.5 2020-2024 Audi A4/S4 Asign Real Carbon Fiber rear diffuser air deflector For 2020-2024 B9.5 Audi A4/S4

Product Information

Product Description

Give your Audi A4 a bold performance edge with these rear diffuser air deflectors. Engineered for B9.5 A4/S4 models (2020–2024), they install on both sides of the rear diffuser to enhance aerodynamic expression and width perception. Crafted from Glossy or Matte 3K dry carbon fiber, each set weighs just 300g but delivers serious styling. Featuring pre-applied 3M tape, installation takes under 10 minutes—no drilling required.

Product Features
  • OEM-Fit Accuracy: Designed specifically for B9.5 A4/S4 rear diffuser contours. Natural fit with factory lines.
  • Featherlight at 300g: Made from aerospace-grade 3K dry carbon—strong, light, and stable.
  • Rear-End Width Enhancement: Installed on diffuser sides to simulate wider, more aggressive stance.
  • Glossy or Matte Carbon Finish: Choose your look—high-gloss or stealthy matte carbon texture.
  • 10-Minute DIY Install: Pre-applied 3M adhesive—no tools or drilling required.

Need assistance? Contact our support team at service@asigncar.com

Compatibility & Package

This carbon rear air deflector set is exclusively designed for the following Audi models:

Make Model Chassis Year Range
Audi A4 / S4 B9.5 2020–2024

⚠️ Designed for OEM rear diffusers. If you have an aftermarket or modified diffuser, please contact support to confirm compatibility.

What's in the Box
  • 1× Pair of Carbon Fiber Rear Diffuser Air Deflectors (Left + Right)
  • Pre-applied Automotive 3M Adhesive

    • Installation Guide

  • Test Fit: Position each air deflector on the sides of the rear diffuser to confirm proper alignment.
  • Surface Prep: Use a clean, dry cloth to thoroughly wipe the diffuser area—remove dust and oils.
  • Peel & Stick: Gradually peel off the 3M backing while pressing the deflector firmly into place.

    • Tip: Avoid washing or exposing to high-pressure water within the first 72 hours after installation.

    Notes & FAQ

  • Q1: Are tools or drilling required?
    A: Not at all. These install with pre-applied 3M tape—no cutting or drilling needed.
  • Q2: Can I install it myself?
    A: Yes. DIY-friendly install process—takes about 10 minutes.
  • Q3: Is the adhesive strong enough for highway speeds?
    A: Yes. We use automotive-grade 3M VHB tape for durable adhesion even at high speeds.
  • Q4: Will this fit aftermarket rear diffusers?
    A: This set is made for OEM B9.5 rear diffusers. For aftermarket kits, please confirm fitment with our team before ordering.

    Where Technology Meets Precision

    Precision Mold Engineering

    Steel molds ensure precision, while premium carbon fiber offers strength, rigidity, and lightweight efficiency for unmatched durability and style.

     
    Autoclave Carbon Curing

    Each carbon fiber part is autoclave-cured under high pressure and temperature, ensuring a flawless weave and exceptional strength for lasting performance and appearance.

    OEM-Quality Fitment

    Designed to fit your vehicle’s contours precisely, each part ensures OEM quality for seamless integration and a high-performance, stylish upgrade.

    Precision Mold Engineering

    Steel molds ensure precision, while premium carbon fiber offers strength, rigidity, and lightweight efficiency for unmatched durability and style.

     
    Autoclave Carbon Curing

    Each carbon fiber part is autoclave-cured under high pressure and temperature, ensuring a flawless weave and exceptional strength for lasting performance and appearance.

    OEM-Quality Fitment

    Designed to fit your vehicle’s contours precisely, each part ensures OEM quality for seamless integration and a high-performance, stylish upgrade.

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    Frequently Asked Questions
    What makes Asign different from other brands?
    Asign stands out by offering meticulously designed carbon fiber kits that fit seamlessly with a variety of vehicle models. Our commitment to precision, use of high-quality materials, and focus on ease of installation set us apart in the market.
    Why should I choose Asign's carbon fiber kits?

    A1: Precision Design & Fit

    Our design process strictly follows original vehicle specifications to ensure a perfect fit for your car. We approach each product with exceptional care and attention to detail.

    A2: High-Quality Materials & Manufacturing
    Asign uses the highest precision steel molds for production, reducing errors and maximizing accuracy. We employ pre-impregnated carbon fiber for all our products, making them genuine and lightweight, yet as strong as steel.

    A3: Easy Installation & Non-Destructive Removal
    Most of our carbon fiber kits can be installed in under 10 minutes (excluding special items like Front Splitters, Rear Diffusers, and Exhaust Tips). Designed for quick installation and removal without damaging your car's surface, our products offer both convenience and flexibility.

    How does Asign ensure product quality?
    Asign upholds strict quality control standards throughout the production process. We use premium materials and advanced manufacturing techniques, followed by comprehensive testing to ensure every product meets our high standards for performance and durability.
    What if I have a quality issue with my product?
    If you encounter any quality issues with your Asign product, please contact our customer service team right away. We will promptly address your concerns and offer solutions, including replacements or refunds, as appropriate.
    How can I make sure the product I order fits my vehicle?
    Before placing an order, carefully check your vehicle's specifications and refer to the product description for compatibility information. If you have any questions or concerns, our customer service team is always available to provide personalized advice and guidance.
    What is Asign's return policy?
    Our return policy varies depending on the specific product and the reason for the return. Please refer to our website or contact our customer service team for detailed information on our return and exchange procedures.