HJ90-4 Mikuni hex head main jets 4/042, size 90

These EBC Mikuni hex head main jets are a must-have for fine-tuning your fuel system. Manufactured by A-BAX Precision Engineering to exacting standards, these size 90 jets are designed for a wide range of Mikuni carburetors, including Mikuni VM, VM-18, VM24-512, VM26-606, and TMX models. Getting your air-fuel mixture right is critical for performance and engine longevity, and these precision-engineered components ensure consistent flow. They are sold as a pack of four, giving you the spares you need for multi-carb setups or future adjustments. Whether you are doing a routine service or a full performance build, these high-quality replacement parts provide the reliability you expect when working on Mikuni intake systems.