NOX Noise Filter 23mm Carbon/Chrome (OK / OKJ)

The NOX Noise Filter 23mm Carbon/Chrome is a premium intake silencer designed to reduce induction noise on modern direct-drive kart engines while maintaining smooth airflow and consistent engine response.

With a 23mm inlet diameter, this NOX filter is commonly used on OK and OKJ engines, as well as other direct-drive kart applications requiring a 23mm intake connection. Its internal noise-damping design helps manage intake sound levels to meet circuit regulations without negatively affecting throttle response or performance.

Featuring a high-quality carbon fibre body with chrome end caps, this noise filter combines lightweight construction with durability and a distinctive, high-end appearance. Easy to install and remove, it is suitable for both race and test environments where effective noise control is required.