Mikuni Small Hex Main Jet Jets

Mikuni small hex main jets are precision-made carburetor main jets. They meter fuel through the main circuit of Mikuni carburetors. Use them to replace worn or clogged jets, or to recalibrate (re-jet) a carburetor for changes in engine setup, altitude, or temperature.

Key Features:

• Small hex head design, commonly referenced as the M10/14 style
• Made by Mikuni, a leading carburetor manufacturer, with tight manufacturing tolerances for consistent, repeatable flow
• Used in many Mikuni carburetors, including early Kawasaki rotary valve and Yamaha two-stroke single applications
• Available in a range of jet sizes so you can fine-tune the air/fuel mixture
• Suited to motorcycle, powersports, and other small-engine carburetor tuning

Fit a genuine Mikuni jet when tuning out rich or lean running. Genuine jets give consistent, accurate fuel metering. Main jet sizes do not flow the same across different jet styles, so match the small hex style to your carburetor.