Mikuni Carburetor Main Jet Large Hex Type Jets

Mikuni Large Hex Type main jets are replacement carburetor main jets (also called fuel jets) for tuning the high-speed fuel metering of compatible Mikuni carburetors. The main jet controls how much fuel flows through the carburetor at wide-open throttle and upper mid-range. Changing jet size lets you adjust the air/fuel mixture for altitude, temperature, exhaust and intake changes, or other engine modifications.

Key Features:

• Large hex head design for easy installation and removal with the correct tool
• Precision-machined brass construction for consistent, accurate fuel flow
• Available in a range of jet sizes so you can fine-tune jetting
• Made by Mikuni, a long-established manufacturer of carburetors for motorcycles, ATVs, snowmobiles, personal watercraft and other powersports and small-engine equipment

Jet sizes are offered as separate options, so pick the size that matches your tuning needs. Replacing a worn, damaged or clogged main jet, or changing to a different size, helps restore or optimize carburetor performance and throttle response.