Fabspeed Sport Catalyst Downpipes for Alfa Romeo Giulia Quadrifoglio

Upgrade the Giulia Quadrifoglio’s primary catalyst sections with HJS sport-catalyst downpipes. These assemblies work upstream of the rear exhaust, so a rear muffler change is not required by the product description. Based in Fort Washington, Pennsylvania, Fabspeed Motorsport designs exhaust, intake and ECU-tuning products for Porsche and other sports cars. Development includes evaluation on a dynamometer, on the road and at the racetrack.

Technical Details

• Manufacturer product reference: FS.ALF.G29T.PSC.
• HJS 200-cell HD metallic sport catalysts.
• Machined stainless inlet flanges and mandrel-bent tubing.
• Direct replacement for the primary catalyst/downpipe assemblies.
• Compatible with the factory rear exhaust or a compatible aftermarket cat-back.
• For the 2.9-litre twin-turbo Quadrifoglio engine, not the four-cylinder Giulia.

Installation Resources

• Manufacturer installation document (PDF)

Manufacturer Videos

Demonstration vehicles may have additional modifications. The selected configuration determines what is supplied; the video does not establish fitment or guarantee the same sound or output on another vehicle.

PMB Performance brings over 20 years of parts and fitment experience. Send your VIN and the relevant original or modified component details if you need help confirming the application before ordering.

Fitment & Compatibility