
This part being universal, it may require adaptations
KEIHIN 125 jet designed for riders concerned with precise carburetion tuning. Original KEIHIN, this replacement jet allows you to adjust the air-fuel mixture richness within the carburetor to achieve consistent engine behavior from idle to wide open throttle.
Whether you are replacing a worn jet, preparing for the track, or adapting the carburetion to a high-flow filter or free-flow exhaust, this jet offers a simple solution for fine-tuning. Ideal for addressing critical engine phases — starting, idle, mid-range, and peak — it fits into the optimization and regular maintenance of your carburetion.
Be sure to check compatibility with the specific model of your carburetor and follow the manufacturer's recommendations during disassembly/reassembly. Proper tuning requires a complete diagnosis (spark plug, float level, needles): change the jet in a methodical manner to restore healthy engine response and controlled consumption.