KJ120-4 Keihin slotted head main jets 99101-393, size 120

For mechanics who demand precision, these EBC slotted head main jets are the ideal choice for tuning Keihin carburetors. Produced by A-Bax Precision Engineering, this size 120 jet is a high-quality replacement for the 99101-393 series. These jets are designed to fit a variety of Keihin hardware, including the FCR and FCR-MX performance series, along with VB, VD, VE, CVK, and CVKR-D models. Sold as a pack of four, they offer the uniformity required for accurate fuel metering across all cylinders. Whether you are adjusting for a high-flow air filter or a custom exhaust system, these jets provide the consistent flow characteristics needed to keep your engine running at its best while preventing lean conditions at high RPMs.