
This part being universal, it may require adaptations
KEIHIN MAIN JET 155 — Main jet of size 155 by KEIHIN, designed for riders and mechanics who are concerned about fine-tuning their carburetor. A simple and reliable replacement part, this jet allows for adjusting the calibration of the main circuit to achieve the appropriate air/fuel mixture based on usage conditions and engine modifications.
Designed to fit compatible KEIHIN carburetors, this main jet of size 155 is the component that defines the fuel flow at medium and high RPMs. Ideal for workshop interventions or track/street adjustments, it installs in place of the original jet to fine-tune the mixture richness. Suitable for riders performing manual carburetor adjustments or maintenance operations.
Usage tips: install on a clean carburetor, check for any dirt, and adhere to the original settings before experimenting with other sizes. If in doubt, have the adjustment checked by a professional to ensure reliable operation and consistent fueling.