Description
Unlock serious performance for your 991.2 GT2 RS with these Fabspeed Valvetronic Sport Cats. By replacing the restrictive OEM ceramic 700-cell cats with free-flow HJS 200-cell cores, you significantly reduce back-pressure, improve throttle response, and add a more aggressive exhaust tone — all while maintaining full functionality of your factory PSE valves. This bolt-on upgrade brings meaningful power gains without triggering a check engine light.
Fitment Notes
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Designed for Porsche 911 (991.2) GT2 RS, model years 2018-on
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Direct-bolt replacement of the OEM GT2 RS catalytic converters
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Retains full compatibility with Porsche’s factory Helical valve system
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No ECU tune required for installation — maintains factory emissions monitor (no CEL)
Included
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Pair of Valvetronic sport cat assemblies (left + right)
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Helical 3.0″ (76 mm) vacuum-actuated Inconel 625 exhaust valves
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HJS German-imported 200-cell HD tri-metallic sport catalytic cores
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All required clamps, gaskets, and mounting hardware
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Installation instructions and Fabspeed lifetime warranty documentation
Product Specs
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Material: 14-16 gauge mandrel-bent T304 stainless steel
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Catalytic core: HJS 200-cells per inch (cpsi), tri-metallic
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Flow: ~92–93% of straight pipe, minimizing restriction
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Power gains (per Fabspeed): +20.4 hp and +24 lb-ft torque
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Valves: High-temp Inconel 625 aerospace-grade Helical (UK)
Product Features
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High-Flow Catalysts: The large 200-cell HJS cores dramatically reduce restriction for improved flow and power.
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Valvetronic Operation: Maintains use of your factory PSE system and exhaust valve control for flexible sound profiles.
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No CEL, No Tune Required: Designed to work with your OEM ECU and emissions system without triggering error codes.
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Throatier Sound: Offers an enriched, more aggressive exhaust note — while preserving refinement when desired.
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Durable Design: Built with premium T304 stainless steel and aerospace-grade valves, engineered for longevity in spirited driving.
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