Enhance the sound and character of Porsche's high-revving naturally aspirated flat-six with the RENNVOX Porsche 911 992.1 / 992.2 GT3 & GT3 RS Cat-Back Exhaust System.

Developed specifically for the Porsche 911 992-generation GT3 and GT3 RS, the RENNVOX cat-back exhaust is engineered to deliver a more engaging exhaust note while preserving the distinctive character of the 4.0-litre naturally aspirated flat-six engine.

The Porsche GT3 driving experience is defined by response, engine speed and sound. The RENNVOX system builds on these characteristics with a deeper and more purposeful exhaust tone at lower RPM, progressing to a sharper and more intense motorsport-inspired sound as the engine climbs through the rev range.

Rather than masking the natural character of the Porsche flat-six, the system is designed to amplify it. The result is greater exhaust presence during acceleration and a more involving connection between throttle input, engine speed and sound.

Carefully developed exhaust routing helps optimise gas flow through the rear section of the exhaust system, while precision-engineered mounting points allow the system to integrate cleanly with the vehicle. As a cat-back configuration, the RENNVOX system upgrades the rear exhaust section while retaining the vehicle's upstream exhaust components.

Whether used as a performance road car or enjoyed on the circuit, the RENNVOX Porsche 911 992.1 / 992.2 GT3 & GT3 RS Cat-Back Exhaust System provides a more purposeful soundtrack for one of Porsche's most distinctive naturally aspirated GT platforms.

Frequently Asked Questions

What Porsche models does this RENNVOX cat-back exhaust fit?

The RENNVOX cat-back exhaust is designed for compatible Porsche 911 992.1 and 992.2 GT3 and GT3 RS models equipped with the naturally aspirated 4.0-litre flat-six engine.

Is this a full exhaust system?

No. This is a cat-back exhaust system designed to replace the rear section of the factory exhaust system while retaining the upstream exhaust and emissions components.

How does the RENNVOX exhaust change the sound of the Porsche 911 GT3?

The RENNVOX system is designed to deliver a deeper and more purposeful exhaust note at lower engine speeds, developing into a sharper and more aggressive motorsport-inspired sound as RPM increases. It enhances the natural sound of the GT3's high-revving flat-six rather than changing its fundamental character.

Does the RENNVOX exhaust fit both the GT3 and GT3 RS?

Yes. The system is designed for compatible Porsche 911 992.1 / 992.2 GT3 and GT3 RS applications.

Does a cat-back exhaust replace the catalytic converters?

No. A cat-back exhaust replaces components downstream of the catalytic converters. The factory upstream exhaust and catalytic converter components are retained with this configuration.

Does the RENNVOX cat-back exhaust improve exhaust flow?

The system uses performance-focused exhaust routing designed to optimise gas flow through the rear exhaust section while providing the enhanced sound characteristics expected from a RENNVOX performance exhaust.

Is modification required for installation?

The RENNVOX system is engineered as a direct-fit exhaust upgrade using the vehicle's existing exhaust mounting locations. Installation should be completed by a suitably qualified automotive or exhaust technician.

Is this exhaust suitable for road and track use?

The system is designed for performance-focused road and track applications. Vehicle owners should ensure their exhaust configuration complies with applicable local noise, emissions and road-use requirements.