2020-2024 For Audi A3 S3 8Y S line Rear Diffuser With Tailpipe

Product Description

Transform the rear profile of your 2020–2024 Audi A3 or S3 8Y with the S‑Line exterior package using this RS3 style rear diffuser complete with dual tailpipe exhaust tips. Replaces your factory rear valance with the aggressive, sporty look of the RS3 — featuring a gloss black UV‑stabilized ABS polymer construction, aggressive honeycomb design, and dual‑outlet exhaust openings that dramatically enhance the visual impact of your rear end. The inclusion of functional exhaust tips gives your A3 S‑Line or S3 a true performance‑inspired look without requiring a full exhaust system upgrade.

The 8Y generation brought sharp, modern styling to the A3/S3 lineup. This RS3‑inspired rear diffuser builds on that foundation, giving your A3 S‑Line a more commanding presence from every angle while improving rear‑end aerodynamics. The diffuser is crafted from UV‑stabilized ABS polymer to achieve its deep high‑gloss shine and provides an aggressive and sporty style that's sure to set your vehicle apart from the rest.

⚠️ Critical Fitment Note (Read Carefully): This diffuser is exclusively for Audi A3 8Y (2020‑2024) and S3 8Y (2020‑2024) models equipped with the S‑Line exterior package. It is not compatible with the Standard exterior package (non S‑Line) bumpers or the RS3 (different rear bumper design). This diffuser fits both Sedan (Saloon) and Sportback (Hatchback) body styles. It comes in two versions: one for A3 S-Line/S3 sedans and one for A3 S-Line/S3 sportbacks/hatchbacks. You must select the correct version for your body style. Please check your rear bumper shape and compare it with the product photos before ordering to ensure correct fitment. If your vehicle is equipped with a trailer hitch system, this diffuser will not be compatible.

📌 Complete 1‑Stop Conversion Kit: Includes rear diffuser + dual exhaust tips + self‑tapping screws + 3M VHB tape + installation manual. Some variations also include an LED brake light for added visibility and style.

Aerodynamic Benefits: The sculpted honeycomb design helps smooth airflow, reduce turbulence, and enhance rear‑end stability at higher speeds. Compared to flat designs, the honeycomb lower section can reduce drag by approximately 15% (tested at 120 km/h).

Serving both individual enthusiasts (B2C) and businesses (B2B):
✅ US warehouse for fast shipping
✅ CE certified for quality assurance
✅ 1‑year warranty for peace of mind
✅ Factory direct – competitive pricing
✅ Dropshipping & wholesale programs available
✅ Custom OEM/ODM orders welcome

5 Key Features

1. Aggressive RS3 Style Design – S‑Line Exterior Package Only
Give your A3/S3 8Y S‑Line the sharp, race‑bred look of the RS3. The aggressive dual‑outlet honeycomb design and sculpted lines create a bold, OEM+ appearance that dramatically enhances the rear profile. The exclusive design adds a deep high‑gloss shine, providing an aggressive and sporty style that’s sure to set your vehicle apart from the rest. This rear diffuser is intended to add a sporty, unique and exclusive look to your Audi A3/S3 8Y and turn it into an RS3-inspired model.

2. Complete Kit with Dual Tailpipe Exhaust Tips
All‑in‑one conversion kit includes the rear diffuser and dual exhaust tips — everything you need for a full RS3/S3 style rear transformation. Features a dual‑tip/dual‑outlet design that fits factory and most aftermarket exhaust systems and is designed to accept exhaust tips up to 4" in diameter (or up to 100x75mm oval tips for an RS3 look). Choose between polished stainless steel or black‑chrome finishes to match your personal style. Some RS3-style variants also come with an LED brake light for enhanced safety and a racing look, which must be connected according to the installation instructions (red live wire/black ground/yellow brake light wire).

3. Premium Gloss Black UV‑Stabilized ABS Construction (TÜV Certified)
Manufactured from high‑quality UV‑stabilized ABS polymer — the same material used in OEM bumpers and body parts. The deep high‑gloss black finish is UV‑protected to prevent fading, yellowing, or bubbling from harsh sunlight. No painting required — ready to install out of the box. The material is up to 10mm thick for increased impact and scratch resistance. This product has been TUV MATERIALGUTACHTEN certified, verifying material quality and safety for road use. A premium pre‑preg dry carbon fiber version is also available for those seeking ultimate weight savings and weave aesthetics.

4. Direct Fitment for 8Y S‑Line (2020‑2024) – No Cutting Required
Engineered for a perfect OEM+ fit onto Audi A3/S3 8Y S‑Line rear bumpers using factory mounting locations. Installs with no drilling, cutting, or modification of any kind required when using factory mounting points. Simply remove your currently installed valance, line up all tabs, and lightly press the diffuser in place until the tabs click into position. Some manufacturers recommend reinforcing the attachment points with rivets for added stability and security. A heat shield must be fitted in the exhaust area to protect the diffuser from heat. The product will arrive with a protective film — do not remove the protective film until you are certain the product fits, as removal will void the return policy.

5. CE & TUV MATERIALGUTACHTEN Certified + EPR Compliant
This diffuser is CE certified, meeting European safety and quality standards for automotive aftermarket parts. It has also received TUV MATERIALGUTACHTEN certification, verifying material quality and safety for road use. The product also complies with EPR (France/Germany) environmental regulations for packaging and waste management. The holographic verification sticker confirms authenticity — removal of the sticker will void returns, only remove once you are certain the product fits.

Specifications

What's in the Box

• 1 × RS3/S3 style rear diffuser

• 2 × Dual tailpipe exhaust tips 

Installation & Safety Guide

Professional installation is strongly recommended — do not attempt DIY unless you are a qualified technician.

Installation Time: 1–3 hours | Difficulty: Moderate to Advanced

Important Safety Notice: When working underneath your vehicle, always use approved jack stands. Never work under a car that is only supported by a floor jack.

Shipping & Returns

 20-Year Specialization: 158000+ bumpers installed since 2006.

• Shipping: Worldwide delivery. In-stock US orders ship within 1-3 business days. International orders: 22-25 business days. Free shipping & no sales tax(Continental US only).

• Returns: If the kit does not fit, arrives damaged, or you are unsatisfied, return it within 15 days as long as it remains uninstalled and unpainted – free return shipping for genuine fitment issues. Combined with our 1-year warranty, this risk-free policy gives body shops, resellers, and DIYers complete confidence when ordering For Audi facelift kits. Contact us for wholesale pricing and US stock availability.

• Warranty: 1-year warranty against manufacturing defects.

Frequently Asked Questions

Q1: Will this fit my 2020‑2024 Audi A3/S3 8Y with the Standard exterior package (non S‑Line)?

A: No. This diffuser is exclusively for vehicles equipped with the S‑Line exterior package. It will not fit standard A3/S3 models. The S‑Line bumper has a different shape and mounting points.

Q2: How do I know if my A3 has S‑Line or non S‑Line exterior package?

A: The S‑Line exterior package includes sportier front/rear bumpers, side skirts, and S‑Line badging on the front wings. If your A3 has a smooth, non‑aggressive rear bumper without the recessed diffuser area, you have the Standard (non S‑Line) bumper.

Q3: Does this kit include exhaust tips?

A: Yes! The complete kit includes dual tailpipe exhaust tips, self‑tapping screws, and 3M VHB tape — a complete 1‑stop solution.

Q4: Does the diffuser require painting or finishing?

A: No. It comes in a premium high‑gloss black UV‑stabilized finish — ready to install out of the box. UV‑protection prevents fading and yellowing. If you decide to paint it, primer must be used first.

Q5: Is drilling required for installation?

A: No drilling, cutting, or modification of any kind is required when using factory mounting locations. However, self‑tapping screws are recommended in corners and tabs for best fitment. Some manufacturers also recommend reinforcing the attachment points with rivets for added stability.

Q6: Is professional installation required?

A: Yes, strongly recommended. Professional installation by someone with aftermarket product experience is highly advised. The rear bumper must be removed to install this diffuser properly, and a technician experienced with exhaust work must install the exhaust tips.