The MIKUNI Main Jet, manufactured by PROX, is part of the 04/042 series and is specifically designed for MIKUNI carburetor VM18 models, including VM, TM, and TMX carburetors. This main jet plays a crucial role in ensuring optimal fuel flow and engine performance for your motorcycle or off-road vehicle. Crafted with precision engineering, the jet ensures durability and reliability even in demanding conditions. Its compatibility with a range of carburetor models makes it a versatile choice for mechanics and enthusiasts looking to maintain or enhance their engine's efficiency. By installing this main jet, you can expect improved throttle response and overall performance, making it an essential component for any MIKUNI carburetor user.