HJ290-4 Mikuni hex head main jets 4/042, size 290

Achieving the perfect tune on a Mikuni carburetor requires high-quality parts, and these EBC main jets are manufactured by A-BAX Precision Engineering to meet those needs. These 4/042 style hex head jets are designed for precision and durability. This size 290 jet features a 6mm hex head and M5.3 x 0.9 threads, making it a direct fit for Mikuni VM series carburetors, including the VM-18, VM24-512, and VM26-606, plus TMX carburetors. Sold as a pack of four, these jets are perfect for mechanics who need to stock up on common tuning sizes. The high-grade brass construction ensures that your fuel delivery remains consistent, helping you avoid lean conditions and ensuring your engine runs at its best.