
This part being universal, it may require adaptations
KEIHIN Main Jet 118 — Manufacturer reference: 99101-357-1180
Replacement main jet by KEIHIN, size 118. This carburetion part is designed for Keihin carburetors to adjust the fuel flow in the high RPM range. Ideal for riders who fine-tune the air/fuel mixture on the road or track, or who are replacing a worn jet to restore stable carburetion.
The main jet controls the fuel supply at high RPMs; choosing the right size is essential for achieving a crisp engine response, smooth acceleration, and avoiding the risks of running too lean or too rich. Designed for easy replacement during a carburetor service, it fits standard Keihin jet sets.
Before any intervention, check compatibility with your model and retain the original settings for reference if needed. For precise installation and adjustment, it is recommended to seek the assistance of a specialized workshop or an experienced carburetion tuner.