
This part being universal, it may require adaptations
KEIHIN Main Jet 98 – Manufacturer reference: 99101-357-0980. Genuine part by KEIHIN, this main jet size 98 is installed in the carburetor body to replace the existing jet during tuning or maintenance operations.
Designed for riders working on carburation, this main jet affects the full throttle range: it directly influences the air-fuel mixture richness and is an integral part of the jetting setup. Ideal for workshop sessions, track adjustments, or finding a suitable carburation for modifications (air filter, exhaust system, altitude…), it allows for precise calibration of the amount of fuel entering the system.
Be sure to keep the original jet for reference and check the manufacturer's recommendations or a workshop manual before replacement. Installation is recommended by a mechanic or an experienced DIYer to ensure a safe and suitable adjustment for your machine.