The NOX / Active Air Filter Cartridge is a replacement intake filter element designed for use with NOX and Active airbox systems on kart engines.

This cartridge is responsible for filtering incoming air before it enters the carburettor, helping protect the engine from dust, debris, and contaminants while maintaining consistent airflow. Regular replacement of the air filter cartridge is essential to ensure stable carburation, reliable performance, and engine longevity.

Manufactured to fit directly inside compatible NOX and Active airboxes, the cartridge is quick and easy to replace, making it ideal for routine servicing between race meetings or during extended testing periods.