HJ420-4 Mikuni hex head main jets 4/042, size 420

Precision fueling is critical for any performance build, and these EBC Mikuni hex head main jets provide the accuracy you need. Manufactured by A-BAX Precision Engineering, these size 420 jets are built to the 4/042 standard. They are compatible with a wide array of Mikuni carburetors, including the VM series, VM-18, VM24-512, VM26-606, and TMX models. In the workshop, we use these larger jets when a bike needs a richer mixture at the top end to compensate for heavy engine modifications. These brass jets are durable and machined to exact specifications for a reliable seal and consistent flow. They are sold as a pack of four, making them a great addition to your carburetor service supplies.