Fabspeed Primary Sport Catalyst Downpipes for BMW M5 (F90)

Replace the F90 M5’s primary catalyst assemblies with HJS sport-catalyst downpipes. This configuration contains catalytic converters rather than straight-through bypass sections. Fabspeed Motorsport designs performance exhaust systems, air intakes and ECU tuning in Fort Washington, Pennsylvania. Porsche and other sports-car applications are developed through dyno testing, road evaluation and racetrack work.

Technical Details

• Manufacturer product reference: FS.BMW.F90.PSCDP.
• HJS 200-cell metallic sport catalysts.
• T304L stainless-steel construction with machined flanges and laser-cut brackets.
• Installs in the engine’s hot-V primary catalyst locations.
• Designed for the factory exhaust or aftermarket systems that retain the original connection layout.

Use restrictions

Fabspeed specifies closed-course competition and off-road use for this product or its catalyst/intake-changing components. A sport catalyst, a STREET option label or the absence of a fault light does not establish public-road emissions approval. Confirm the requirements for the intended installation before ordering.

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