
This part being universal, it may require adaptations
KEIHIN Main Jet 180 (part no. 99101-357-1800)
Replacement main jet by KEIHIN, specially designed to adjust fuel delivery. Numbered "180", it regulates the fuel flow in the main circuit, influencing the air/fuel mixture at wide open throttle and high RPMs. A top choice for enthusiasts seeking precise tuning of the richness on their Keihin carburetor.
This jet installs in the carburetor jet holder and replaces the original jet to modify the fuel supply size. Ideal during an exhaust change, circuit tuning, or after engine modifications, it helps achieve engine behavior more suited to your expectations.
For optimal tuning, pair it with a comprehensive carburetion check (air/fuel, needle, idle jet) and follow the manufacturer's recommendations. If you are unsure about the size choice, consult a tuner or motorcycle mechanic to avoid inappropriate richness and preserve engine health.