Mikuni Main Jet Large Hex Carburetor Metering Jet Jets

Mikuni Large Hex Main Jets are precision carburetor metering jets that control how much fuel flows through the main circuit at mid-to-full throttle. Also called main jets or carb jets, they let you tune the air/fuel mixture to suit your engine, your modifications and the conditions you ride in. They are a common replacement or tuning part for carburetors that use the Mikuni large hex jet style.

Key Features:

• Large hex head design for easy installation and removal with a standard wrench or jet tool
• Precisely calibrated metering orifice for consistent fuel delivery
• Machined brass construction resists wear and corrosion
• Made by Mikuni, a long-established maker of carburetors for motorcycles, ATVs, snowmobiles, watercraft and other powersports equipment
• Available in a range of jet sizes for jetting changes and fine-tuning

Changing the main jet is one of the most common ways to correct a rich or lean condition after fitting an aftermarket exhaust or air filter, or after a change in altitude or temperature. Pick the correct jet size from the options on this page.