The NOX Noise Filter D.30mm Silver/Black is a high-quality intake silencer designed to reduce induction noise on gearbox kart engines while maintaining stable airflow and consistent engine response.

With a 30mm inlet diameter, this NOX filter is commonly used on KZ and KZ2 engines, as well as other gearbox kart applications requiring a 30mm intake connection. Its internal noise-damping design helps meet circuit sound limits without compromising throttle response or reliability.

Finished in a durable silver and black combination, the NOX filter offers a professional appearance, long service life, and straightforward installation—ideal for both race and test environments.