Fabspeed HJS Sport Catalysts for Corvette C8 ZR1 (2025+)

Replace the matching LT7 ZR1 catalyst assemblies with insulated Fabspeed HJS 200-cell units. This ZR1 reference is explicitly different from the ZR1X catalyst system and must not be substituted for it. 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.CHEVY.C8ZR1.SC.
• Two HJS tri-metallic 200-cell catalyst assemblies.
• T304L stainless construction.
• Ceramic-fiber insulation with Inconel outer heat blanket.
• Fabspeed reports approximately 20 lb / 9.1 kg less than its original catalyst baseline.
• Matching original exhaust and sensor interfaces required.
• No cutting or welding specified.
• Not cross-compatible with ZR1X.
• Covered by the Fabspeed Lifetime Warranty, subject to its terms and exclusions.

Use restrictions

Confirm application-specific emissions approval and intended use before ordering. A sport catalyst or absence of a fault light does not by itself establish public-road compliance.

Installation Resources

• Manufacturer installation document (PDF)

Product Videos

Demonstration cars may have additional modifications. The selected configuration determines what is supplied; a video does not establish another vehicle’s fitment or guarantee identical sound or output.

With over 20 years of parts experience, PMB Performance can help check the application. Share your VIN and photos or references for the component being replaced before ordering if the match is uncertain.

Fitment & Compatibility

Use the application details below together with the original component and any existing modifications.