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Fabspeed Alfa Romeo Giulia Quadrifoglio Primary Cat Bypass Downpipes

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Fabspeed Alfa Romeo Giulia Quadrifoglio Primary Cat Bypass Downpipes


Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.

Eliminate the heavy and restrictive factory catalytic converters with high flowing cat bypass downpipes for maximum power and an exhilarating sound. Fabspeed's direct bolt-on racing straight pipes replace the OEM factory restrictive catalytic converters for maximum exhaust flow and power throughout the RPM range. When racing, quality and reliability are at the top of the list so don't make any exceptions for your Alfa Romeo. Have peace of mind when upgrading your vehicle with the quality of Fabspeed products and services that it deserves. 


  • Alfa Giulia type 952 Quadrifoglio  Cat Bypass pipes / Competition- racing pipes 
  • Simple direct replacement bolt-on straight pipes to replace the OEM catalytic converters.
  • CNC machined billet stainless steel inlet flanges with CNC mandrel bent tubing.
  • No restriction for Competition Race track driving. Immediately unleash more sports car sound and power across the RPM band. Hear maximum turbocharged whistling. Guaranteed Check Engine Light and less power than the 200 cell HJS German sports race catalytic converters.
  • Works with any rear cat back exhaust systems.
  • For all out maximum potential power when Racing Competition is your only objective and you have a software tune to maximize power and turn off cell lights. Don't waste time with rear mufflers since these are valved and bypass any restriction.

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 is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are 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.