
This part being universal, it may require adaptations
KEIHIN Jet 120 — original part by KEIHIN, manufacturer reference 99101-393-1200. Jet size 120 intended for carburetion adjustments, designed to replace the corresponding jet in compatible carburetors.
This jet is aimed at riders and mechanics looking to fine-tune the air/fuel mixture. By installing an appropriate size like the 120, you can adjust the richness of the carburetion during engine tuning or when replacing worn parts. A simple and compact spare part, it fits into the jet holder of the Keihin carburetor designed for this size.
Practical tips: check the installed size before replacement and work on a cold engine. Carefully remove the jet holder, clean the threads and seat before installation, and tighten without forcing to avoid damaging the part. If in doubt about compatibility, consult your carburetor documentation or a professional.