2.25" Catalytic Converters

2¼″ Universal Catalytic Converters

Perfect for small to mid-capacity engines, our 2¼″ universal catalytic converters are designed to reduce emissions while maintaining smooth exhaust flow. Whether you're upgrading a street car, replacing a worn-out OEM unit, or building a custom system, these high-flow cats deliver performance and compliance in one package.

Each converter features a robust metallic substrate and durable housing to withstand the rigours of Australian driving conditions. Suitable for both petrol and diesel applications.

Pair your 2¼″ cat with essential components for a complete setup:

Need a different size? Explore our full range of universal catalytic converters from 2″ through to 4″ diameters.

Engineered for longevity, emissions compliance, and performance — shipped fast Australia-wide.

19 Products Found