KJ177.5-4 Keihin slotted head main jets 99101-393, size 177.5

For high-performance applications where fuel demand is high, these EBC Keihin slotted head main jets provide the flow and precision you need. Manufactured by A-Bax Precision Engineering, these size 177.5 jets are a replacement for the 99101-393 series. They are designed to fit Keihin FCR, FCR-MX, VB, VD, VE, CVK, and CVKR-D carburetors. Proper jetting at this level is crucial for preventing lean conditions that can lead to engine damage. These jets are sold as a pack of four, ensuring you have a matched set for your carburetor bank. The high-quality brass construction and precise machining make these an excellent choice for any serious engine builder or tuner looking for reliable fuel delivery.