Metal Cat Monolith 300 CPI

300-CPI catalytic converter & monolith: Performance for racing series with strict regulations

The 300-CPI catalytic converter (300 cpsi) is the strategic choice for motorsports and specific racing series where maximum performance must be combined with strict compliance with environmental regulations, emission limits, and strict noise restrictions. Many modern motorsport regulations now mandate functional catalytic converters and meticulously monitor both exhaust emissions and noise levels. Here, the 300-CPI offers the optimal technical solution: It drastically reduces harmful exhaust backpressure compared to OEM components, while simultaneously ensuring technical approval in the paddock.

At Turbo-parts.de, you’ll find highly durable 300-CPI metal catalysts and weld-in monoliths that combine maximum high-flow performance for circuit, hill climb, or rally racing with excellent filtering and damping effects.

Compliance with dB limits through effective sound damping

A key technical advantage of the 300-CPI structure in racing is its acoustic effect on the entire exhaust system:

• Significant noise reduction: An increasing number of racetracks and racing series are enforcing extremely strict noise limits (decibel limits). Due to the higher mesh density compared to 100- or 200-CPI designs, the matrix of the 300-CPI system acts as an additional, highly efficient silencer. The sound waves from the pulsating exhaust flow are noticeably broken up in the finer channels.

• Avoiding Disqualifications: If open exhaust systems or downpipes exceed the race organizers’ decibel limits, a 300-CPI silencer ensures a significantly cleaner and quieter sound without significantly restricting the flow velocity of the exhaust gases.

• Compliant acoustics at maximum load: The engine retains its sporty racing character, yet remains well within the required limits of the respective class regulations when measured at the track.

Regulation compliance and high-end exhaust gas purification

Modern race cars and production-based touring car classes monitor the catalytic converter’s conversion efficiency with extreme precision. A 300-CPI unit is often the only option here to prevent error messages in the ECU or the activation of the emergency running system:

• Reliable exhaust gas conversion under racing conditions: The dense arrangement of the channels ensures maximum contact between the hot exhaust gas stream and the catalytic layer.

• Precious metal coating as a performance guarantee: In motorsports, too, the sheer number of cells is only half the battle. Our premium 300-CPI catalysts are coated with an extremely high-quality, durable washcoat made of platinum, palladium, and rhodium. This ensures that chemical cleaning occurs so precisely and quickly that the required emission values are easily met during technical inspection.

• Extreme thermal tolerance: The wound metal matrix outperforms any brittle ceramic catalytic converter in terms of heat resistance. It withstands sustained exhaust gas temperatures of well over $950^\circ\text{C}$ It performs flawlessly under tough racing conditions and withstands the vibrations from the curbs.

Rated for up to 450 hp per catalytic converter unit

Despite its finer structure, the metal-carrier technology of our 300-CPI cores offers excellent flow, which reduces thermal stress on the turbocharger and noticeably improves response coming out of tight corners. A single 300-CPI core is designed for peak outputs of up to approx. 450 hp. For engines with extreme power upgrades (such as in the VLN, RCN, or in rally cars), a parallel-connected bi-cat system can effortlessly raise the flow limit, while the excellent damping and filtering performance required by the regulations is fully maintained.

Custom Motorsport Solutions & Small-Batch Production

Are you looking for the right housing diameter for your racing downpipe or do you need custom dimensions for a custom-made monolith in a race car? We supply 300-cell components precisely tailored to the requirements of your team or racing series. Just send us an email—the technical team at Turbo-parts.de will assist you with the planning and provide you with a no-obligation, custom quote!