HJ310-4 Mikuni hex head main jets 4/042, size 310

Tuning a Mikuni carburetor for maximum power requires the precision of EBC hex head main jets. Manufactured by A-BAX Precision Engineering, these 4/042 style jets are designed to provide consistent fuel flow for a variety of applications. This size 310 jet features an M5.3 x 0.9 thread and a 6mm hex head, fitting Mikuni VM series carburetors, including the VM-18, VM24-512, and VM26-606, along with TMX carburetors. Sold as a pack of four, these jets are a must-have for any performance-oriented workshop. The high-quality brass construction ensures that the jet remains clear and functional, providing the reliable fuel metering necessary for a crisp throttle response and a smooth pull all the way to the redline.