CR165-4 Keihin hex head main jets 99101-357, size 165

If your performance build is running lean at high RPMs, stepping up to these EBC hex head main jets can help you find that extra power. Manufactured by A-Bax Precision Engineering, these size 165 jets are designed to replace Keihin part number 99101-357. They fit a wide range of popular carburetors, including the FCR, FCR-MX, PE, PJ, PWK, PWM, and CR Special models. Each jet is machined to strict tolerances to ensure uniform fuel delivery across your cylinders. Sold as a pack of four, these jets are a must-have for any mechanic working on Keihin-equipped bikes who needs to ensure the main circuit is perfectly calibrated for the engine's specific requirements.