NOX Noise Filter 23mm Red/Black (OK / OKJ) Trolley 125cc single-cylinder

125cc single-cylinder

and other CIK-FIA regulated classes

Quick-folding design – collapses in seconds for easy transport and storage

This is a go-to adjustment when the track is green or high-grip

The secure lace and Velcro closure system keeps the boots firmly in place

NOX Noise Filter 23mm Red/Black (OK / OKJ) Trolley 125cc single-cylinderThe NOX Noise Filter D. 23mm Red Black is designed to effectively reduce intake noise on direct drive kart engines while preserving smooth airflow and reliable throttle response. Featuring a 23mm inlet diameter, this NOX intake silencer is widely used on OK and OKJ engines, as well as other kart engines requiring a 23mm intake connection. Its compact internal design helps manage induction noise to comply with circuit sound regulations without