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Audi S4 / S5 (3.0 Liter TFSI) HJS Euro 6 Sport Catalytic Converter Downpipe

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20.00 LBS
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Audi S4 / S5 (3.0 Liter TFSI) HJS Euro 6 Sport Catalytic Converter Downpipe


Meet the strictest of emissions standards while freeing up power with an HJS 200-cell Euro 6 sport catalyst downpipe.           

This downpipe is produced by HJS themselves as a solution to meet the strict requirements of Euro 6 compliance. As a master distributor of HJS catalysts, we're happy to import from Germany and supply this downpipe. Availability and lead time may vary depending on production volume. Call and speak to one of our performance specialists for details.                


  • Fits Audi S4 Quattro 3.0L TFSI (Avant / Stufenheck) and S5 Quattro 3.0L TFSI (Cabriolet / Coupe / Sportback) vehicles. Including the SQ 5 Quattro 

  • 200 cell ECE homologated catalyst cat design improves flow over factory while being Euro 6 compliant

  • Direct bolt-on replacement; no cutting or welding required

  • Does Not trigger check engine light

  • 140mm OD Input and 2 - 60mm OD Output pipe

  • Complies with most emissions regulations, and is Euro 6 certified and has TÜV homoligation (NOTE: It the purchaser's responsibility to verify legality and compliance in their region.)

DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.