
This part being universal, it may require adaptations
KEIHIN Main Jet 75 — Manufacturer reference: 99101-357-0750
Replacement main jet by KEIHIN, designed to directly affect the carburation of Keihin carburetors. Ideal for fine-tuning during preparation or maintenance, this jet allows you to adjust the air-fuel mixture richness to achieve a more suitable engine behavior for your setup (intake modification, exhaust, altitude...).
Easy to install for those who are familiar with removing the carburetor, this jet replaces the original to refine the carburation settings. Before any intervention, check compatibility with your model and note the condition of other components (needle, slide, idle jet) for a coherent adjustment.
Workshop tip: proceed step by step and test on the road or on a test bench after each change to find the ideal operating range. If in doubt, have the carburation checked by a specialist.