Milltek Sport Catalytic Converters with Heat Wrap for 2023+ Chevrolet Corvette C8 Z06

Description

Upgrade your C8 Corvette Z06 (5.5L LT6) with Milltek’s Large-Bore Hi-Flow HJS Sports Catalysts wrapped in motorsport-grade thermal insulation. These sport cats use a high-flow 200 CPSI core to reduce backpressure, deliver more efficient exhaust flow, and unleash a more aggressive, exotic exhaust note — all while controlling under-hood heat via F1-style heat wrap.

Fitment Notes

• Designed specifically for 2023+ C8 Corvette Z06 (5.5L LT6). 

• Uses factory GM gaskets for installation. 

• No ECU tune is required; engineered to run without triggering a CEL when used with OEM headers, intake, and throttle bodies. 

• May not be compatible with certain aftermarket airboxes – will not fit with JLT aftermarket airbox. 

Included

• Left and right catalytic converter assemblies (two sport cats) pre-wrapped in F1-style heat insulation. 

• Mounting hardware. 

• Installation instructions from Milltek.

Product Specs

• Catalytic Core: HJS 200 CPSI, Euro 6 HD spec

• Material: 304L stainless steel

• Weight Reduction: ~10 lb lighter than OEM catalysts per Milltek spec sheet. 

• Thermal Management: Wrapped in F1-style motorsport-grade heat wrap for better heat control. 

• Emission / Diagnostics: Designed to not trigger a CEL (check engine light) with factory ECU when installed with OEM components. 

• Performance Gains: Power/torque gains across the powerband – please reference dyno chart above

• Construction Origin: Made in UK (Milltek Sport legacy engineering)

Product Features

• High-Flow Catalyst Design – The 200 CPSI core boosts flow and reduces restrictions compared to stock cats, translating to real-world power gains.

• Motorsport-Grade Heat Wrap – F1-style thermal wrap minimizes heat soak, protecting nearby components and helping maintain lower under-hood temperatures.

• No Tune Required – Engineered to work with OEM headers and intake, without causing a CEL, making it a plug-and-play performance upgrade.

• Significant Weight Reduction – By shedding nearly 10 lb compared to factory converters, these cats contribute to reduced weight and improved throttle response.

• Durable Construction – Built from 304L stainless steel for long life and resistance to corrosion and thermal fatigue.

• Professional Heritage – Made by Milltek in the UK, leveraging decades of motorsport and performance exhaust experience.

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