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Alfa Romeo Giulia Quadrifoglio Primary Sport Catalytic Converter Downpipes

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25.00 LBS
Calculated at Checkout
HP (whp):
TQ (ft/lbs):
WT (lbs) / (Kg):
-4.2 / -1.9
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Alfa Romeo Giulia Quadrifoglio Primary Sport Catalytic Converter Downpipes


Why We Choose HJS Catalytic Converters: 

HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.    If you'd like to learn more, watch our video about HJS catalytic converters.

Eliminate the heavy and restrictive factory catalytic converters with high flowing stainless steel sport catalytic converter downpipes for maximum power and an exhilarating sound. Fabspeed's direct bolt-on replacement sport cats use the highest quality German imported HJS trimetallic- HD Euro 6 certified- high performance catalytic converters. This guarantees reliable and worry free performance for your Alfa Romeo, so have peace of mind when upgrading your vehicle with the quality of Fabspeed products and services that it deserves. 


  • Alfa Giulia type 952 Quadrifoglio 
  • HJS German imported  ultra high flow 200 Cell HD catalytic converters
  • Simple direct replacement bolt-on super quality German imported Emitec trimetallic- HD Euro 6 certified- high performance catalytic converters.
  • CNC machined billet stainless steel inlet flanges with CNC mandrel bent tubing.
  • Extra Large HJS German EURO 6 Homologated certified EU imported HD catalytic converters that flow 92% of a  straight pipe.
  • Immediately unleash more sports car sound and power across the RPM band. Hear some more musical turbocharged whistling and enhanced exotic sounds.
  • The Alfa Romeo catalytic converters are the most RESTRICTIVE components on the OEM exhaust system. High Flow German catalytic converters are the solution for performance and sports car sound. Fabspeed Motorsport logically declines to even engineer a rear slip on exhaust.
  • Compliments any rear cat back exhaust systems stock/OEM or any aftermarket will work with Fabspeed HJS catalytic converters.
  • High Flow German sports racing catalytic converters are the best improvement in performance possible for these cars worldwide. The foundation for sports car sound and power is to reduce restriction right after the turbochargers. Don’t waste time with rear mufflers since these are valved and bypass any restriction.
  • Guaranteed no Check Engine light no tune required.
  • The Fabspeed HJS catalytic converter chosen makes more power than any other brand of catalytic converter. 100% Guaranteed. 

Installation instructions: remove under car panels with Torx screw attachment. This allows access to left and right catalytic converters. Lubricate twin accuseal clamps and V band clamp hardware bracket holding catalytic converters to engine block. REMOVE all hardware with 13mm, 15mm and 17mm sockets. Remove Oxygen sensor bungs by unscrewing using a 22mm 7/8” wrench . Remove catalytic converters from the car. REVERSE the procedure to install the Fabspeed Motorsport High Flow German catalytic converters. Enjoy more sports car sound and power. 


Weight Savings

Stock Cats 17 Pounds / 7.5 KG

Fabspeed 12.8 Pounds / 6 KG


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.