Audi A3/ S3 8Y Full Carbon Rear Diffuser 2021-2023
Audi A3 / S3 (2021–2023) Carbon Fibre Rear Diffuser
Carbon Division Performance Series
Unleash the full potential of your Audi A3 or S3 with the Carbon Division Carbon Fibre Rear Diffuser. Designed for the 2021–2023 models, this diffuser delivers an aggressive motorsport look while enhancing rear airflow and stability.
Premium Carbon Division Design
Crafted from high-strength, lightweight carbon fibre, this diffuser brings a truly premium finish to your rear end. The sharp lines and sculpted fins give your A3/S3 a wider, lower, more purposeful stance — exactly what a modern Audi should have.
Key Features
- Tailored Fitment – Engineered precisely for the 2021–2023 Audi A3 and S3 models (saloon & sportback depending on variant).
- Full Carbon Fibre Construction – Lightweight, rigid, and finished with a deep gloss UV-resistant clear coat.
- Aggressive Aero Styling – Prominent fins and a deeper profile transform the rear appearance with true performance character.
- Improved Airflow – Helps smooth turbulence at the rear of the car for enhanced stability at speed.
- OEM+ Integration – Designed to follow the factory body lines for a clean, seamless upgrade.
- Straightforward Installation – Direct replacement for the OEM diffuser; no modifications required.
Why Carbon Division?
Every Carbon Division piece is built to deliver the perfect balance of style, performance, and craftsmanship. Our diffuser elevates the presence of your Audi while retaining everyday usability and long-term durability.
Compatibility
- Audi A3 (8Y) – 2021, 2022, 2023
- Audi S3 (8Y) – 2021, 2022, 2023
Delivery Info
We aim to deliver your order quickly and securely, whether you’re in the UK or abroad. Here’s everything you need to know about rates, timings and delivery.
Domestic Shipping (UK)
Standard Shipping
Orders under £50 are subject to a standard shipping fee of £2.99. Delivery times vary by location and are estimated at checkout.Free Shipping
Orders over £50 ship free across the UK.
Estimated Delivery Times
Standard UK delivery generally takes 3–5 business days after dispatch. Dispatch times may vary with product availability and order volume. You’ll receive tracking information as soon as your order ships.
Made-to-Order Items
Some products, including our titanium exhaust systems, are built to order. The production time is shown on the product page (typically 3–4 weeks) and is in addition to the delivery times above.
International Shipping
We ship internationally. Rates are calculated by destination and package weight and shown at checkout.
Customs and Import Fees
International customers may be charged customs duties, taxes or fees by the destination country. 150 Performance is not responsible for these charges. Please check with your local customs office before ordering.Estimated Delivery Times for International Orders
International delivery times vary with destination and customs processing. Most international orders arrive within 7–21 business days.
Order Processing Times
Orders are processed within 1–2 business days. Orders placed at weekends or on holidays are processed the next business day. You’ll get a confirmation email with tracking once your order ships.
Additional Information
Shipping Address Accuracy
Please make sure your shipping details are correct at checkout. 150 Performance cannot be held responsible for lost or delayed shipments due to an incorrect address.Delayed or Lost Packages
Occasionally delays happen for reasons outside our control, such as weather or carrier issues. If your parcel hasn’t arrived within the estimated time, contact us and we’ll sort it out as quickly as possible.
Contact Us
Any questions about shipping? Email us at info@150motorsport.com.
Returns
We want you to be happy with every part you buy from us. If something isn’t right, here’s how returns work.
Changed your mind?
(R1.1) You can return a standard (non made-to-order) item for a refund or exchange. Please let us know within 14 days of receiving your order that you’d like to return it. Once you’ve told us, you then have a further 14 days to get the item back to us.
Return requests made after 14 days, or items received back after this period, can’t be accepted.
To keep returns smooth, items need to come back unused, in their original packaging, and packed the way we sent them. Please don’t use duct tape on the original box, as it damages the packaging and we may not be able to accept the return.
Made-to-order products
Made-to-order items (including our built-to-order exhaust systems) are produced to your specification, so they are final sale and can’t be returned for a change of mind. If your item arrives damaged or faulty, contact us within 2 days of delivery and we’ll put it right.
Made-to-order products should be fitted by a professional. Some may need minor modification to the part or vehicle for the best fit.
Restocking fee
(R1.2) Change-of-mind returns are subject to a 20% restocking fee, deducted from your refund. Refund = total item value, minus shipping, minus any discount used, minus 20%.
(R1.3) In some cases our returns team may choose to waive the restocking fee as a goodwill gesture. This is decided case by case and doesn’t guarantee future waivers.
Third-party brands
(R1.4) Items from other brands (such as Milltek, Scorpion, Cobra and Maxton Design) must be returned in their original, undamaged box so they can be resold as new.
Return postage
(R1.5) To start a return, just email info@150motorsport.com. Change-of-mind return postage is paid by the customer.
(R1.6) Refunds cover the item price only; original delivery charges aren’t refundable.
Damaged or faulty items
(R1.7) If an item arrives damaged or faulty, let us know within 14 days of delivery and we’ll help straight away.
Please inspect every part carefully before fitting. Once a part has been fitted we can’t tell whether damage happened in transit or during installation, so fitting a damaged item means it can’t be returned.
Sealed items
(R1.10) Items with a “No Return If Seal Removed” sticker can’t be returned once the seal is broken.
Audi A3/ S3 8Y Full Carbon Rear Diffuser 2021-2023
If you have any questions, email us and we'll get back to you within 24 hours on weekdays.
Shipping Information
UK: £2.99 on orders under £50; free over £50. Usually 3–5 business days after dispatch, with tracking.
Built-to-order items: production time is shown on the product page (typically 3–4 weeks) before dispatch.
International: rates by destination and weight, shown at checkout. Most orders arrive in 7–21 business days. Import duties and taxes are the customer's responsibility.
Orders are processed within 1–2 business days.
Customer Support & Fitment
Email us at info@150motorsport.com. Include your car's make, model and year (or registration) and we'll confirm fitment before you buy.
Returns
Standard items: tell us within 14 days of delivery, then return within a further 14 days, unused and in original packaging. A 20% restocking fee applies to change-of-mind returns, and return postage is paid by the customer.
Made-to-order items are final sale unless they arrive damaged or faulty (tell us within 2 days of delivery).
Full details on our Returns Policy page.
