Yonristic Performance MaxFlow Catalytic Converters; High Flow (20-27 Corvette C8)

Corvette C8 MaxFlow Performance Cats

Yonristic's MaxFlow cats replace the C8's restrictive factory catalytic section with a high-flow design that reduces backpressure directly after the headers, aimed at sharper throttle response and stronger top-end pull. Two configurations are offered: a free-flow version for the least restriction and the loudest, most race-oriented sound, and a 200-cell high-flow catted version that improves flow over stock while keeping a more refined tone and catalytic structure.

Both versions are fully wrapped in high-temperature heat shielding, which matters on the C8's mid-engine layout where thermal management around the rear exhaust area affects component protection and consistency under hard driving. Each set ships with O2 spacers as a temporary measure to help with catalyst-efficiency warning lights ahead of proper ECU tuning, though tuning is still recommended for the best drivability and long-term reliability.

• Free-flow or 200-cell high-flow configurations
• Full heat-shield wrap for thermal management
• O2 spacers included
• Direct-fit design, compatible with OEM or aftermarket exhaust
• Off-road / track use only, not emissions-legal for street use

Fitment: Corvette C8 Stingray (2020-2027+), Corvette C8 Z06 (2023-2027+). Engine compatibility: LT2 6.2L V8, LT6 5.5L flat-plane V8.

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