The Fabspeed ZR1 Sport Racing Catalytic Converters are a no-compromise exhaust upgrade engineered to unlock the full performance potential of the Chevrolet Corvette C8 ZR1 twin-turbo platform. Utilizing German-engineered HJS 200-cell tri-metallic catalysts, this system flows up to 90–92% of a straight pipe, dramatically reducing backpressure while maintaining emissions compliance.
Designed for extreme horsepower applications, these sport cats are rated for up to 1200HP per catalyst and deliver massive gains in turbo response, throttle sensitivity, and overall power. The result is a sharper, more aggressive driving experience with faster spool, increased midrange torque, and a more exotic turbocharged sound profile. Built from aerospace-grade stainless steel and insulated for high heat environments, this is a true motorsports-derived solution for drivers who want maximum performance without going catless.
Fits 2025+ Chevrolet Corvette C8 ZR1 twin-turbo models
Direct bolt-on replacement for factory catalytic converters
Designed for OEM exhaust compatibility and aftermarket systems
No cutting or welding required for installation
No ECU tune required for operation, though tuning can maximize gains
(2) High-flow HJS 200-cell tri-metallic catalytic converters
Integrated stainless steel catalytic converter housings
Pre-installed heat insulation and shielding
Installation hardware (application dependent)
Power Gains: +91 HP / +141 lb-ft torque (dyno-proven)
Flow Rate: 90–92% of straight pipe efficiency
Catalyst Type: 200-cell HJS HD tri-metallic EURO 6 catalysts
Horsepower Rating: Up to ~1200HP per catalyst
Material: T304L stainless steel construction
Weight Savings: ~20 lbs vs OEM catalytic converters
Heat Protection: Ceramic fiber insulation rated to ~2000°F with Inconel heat shielding
Compliance: EPA compliant, European homologated, TÜV approved
Near Straight-Pipe Flow with Emissions Compliance – Achieves 90%+ flow while retaining catalytic functionality, eliminating the need for catless setups.
Massive Power Gains – Significant increases in horsepower and torque across the entire RPM range.
Faster Turbo Spool & Response – Reduced backpressure improves boost response and transient acceleration.
Race-Proven HJS Catalyst Technology – Used in WEC and IMSA competition for durability and performance.
No Check Engine Light – Engineered to operate without triggering catalyst efficiency faults.
Extreme Heat Management – Advanced insulation and Inconel shielding protect surrounding components in high-boost applications.
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