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Fabspeed Alfa Romeo Giulia Quadrifoglio Primary Sport Catalytic Converter Downpipes

Calculated at Checkout
HP (whp):
TQ (ft/lbs):
WT (lbs) / (Kg):
-4.2 / -1.9

Fabspeed Alfa Romeo Giulia Quadrifoglio Primary Sport Catalytic Converter Downpipes


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.
  • Optimized for maximum performance with NO catalyst generated check engine light, guaranteed
  • 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

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.

Sport Catalytic Converter (STREET) - 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

To RETURN any system, product or merchandise you must contact us first for a Return Authorization (RA) Number. Special order and custom made systems, apparel, Carbon Fiber Wall Art, and other certain merchandise are NOT returnable. ALL SALES ARE FINAL. To return a Fabspeed Motorsport product an RA number must be requested and if granted the item(S) must be in original Fabspeed Motorsport sealed packaging. A copy of the original invoice and a brief explanation must accompany all returned items. You must follow our instructions for returning items carefully, or Fabspeed Motorsport reserves the right to charge a 25% restocking fee on any OPENED box or repackaged products. Customers are responsible for return shipping charges. If an order was shipped with a promotional “Free Shipping”, and the order is returned, we exclusively reserve the right to charge the customer or distributor for the cost of that original shipping and handling. If a Fabspeed Motorsport Performance package is ordered, and an individual component of that package is returned, Fabspeed Motorsport reserves the right to charge back the performance package discount along with any additionally offered discounts. Return shipped items DAMAGED in transit will RESULT in additional charges up to and including rejection of the competent. It is the customer’s responsibility to ship safely and properly. No returns accepted after 30 days from the invoice date. No credits will be given after 30 days from the invoice date.

To qualify for return, the product must be unused and remain in the original packaging, as well as match the current design and packaging for the product at the time of return. Sounds is subjective and therefore does not qualify for a return of a used product. See Sound Solution Guarantee to see if your product is covered.

Periodically mistakes are made when ordering, or a wrong part is shipped, and you may wish to return an item. We will do everything reasonable to satisfy you. Please contact Fabspeed Motorsport immediately via email at to discuss the circumstances before returning any products. Anything returned without prior authorization from Fabspeed Motorsport will be refused. All returns must be sent back fully prepaid. Our customer service department ( will issue a Return Authorization Number, which must accompany any return. A copy of the original invoice and a brief explanation must accompany all returned items. No returns accepted after 30 days from the invoice date. No credits given after 30 days.


Fabspeed Motorsport cannot be held liable for refusal of, delay of, loss of, theft or damage to a shipment of any item. The customer agrees to indemnify Fabspeed Motorsport for all costs, fees and expenses Fabspeed Motorsport incurs as a result of any violation of any local, state, federal, national or international laws or regulations. Customer agrees to take responsibility for lost packages that were not independently insured or sent without requiring signature. The customer understands they will be liable in the event of additional fees, tariffs, or legal issues such as border seizure. Customer accepts these risks and agrees to release Fabspeed Motorsport of all liability.

Fabspeed Motorsport reserves the right to charge a shipping and handling fee on every order being shipped from our facility. This fee is universal and applies to all retail and wholesale purchases and cannot be waived or credited.

A 6% sales tax will be implemented for every purchase made by a Pennsylvania resident. This fee will be charged for in-house installations and products purchased online, over the phone, and/or via email, this fee is required by law, is non-negotiable and non-refundable.

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