Mikuni Main Carburetor Jet

The Mikuni Main Carburetor Jet (also called a main jet or carb metering jet) controls how much fuel flows through the main circuit of your carburetor at mid-to-wide-open throttle. Changing the main jet is one of the most common ways to tune air/fuel mixture for engine modifications, intake and exhaust changes, or changes in altitude and temperature.

Key Features:

• Precision-machined metering orifice for consistent, repeatable fuel flow
• Brass construction that resists corrosion and wear
• Made by Mikuni, a long-established maker of carburetors for motorcycles, ATVs, snowmobiles, and other powersports and small-engine equipment
• Available in a range of jet sizes so you can fine-tune jetting for your setup
• Easy to swap during carburetor tuning or rebuilds

Choose the correct size from the available variants to bring your fuel delivery in line with your engine's needs. Proper jetting helps with throttle response, power delivery, and engine reliability.