Adjustable main jet for S&S Super B carburetors. It threads into the float bowl drain plug, below the main metering jet, and lets you dial in jet sizes from 60 to 124 without pulling the bowl or buying a pile of fixed jets you'll never use again.

• Fits S&S Super B carburetors
• Adjustment range: 60 to 124
• Installs in the float bowl drain plug, below the main metering jet
• O-ring not included

Installation and adjustment instructions are in the PDF linked below.

Installation instructions (PDF)