Main Jet 240 For Concentric Or Monobloc Carbs

These replacement main jets for your Amal carburetor come right from the factory, don’t be fooled by substandard knockoffs that are out on the market! Use these to tune in your carb by either increasing or decreasing your main jet size, which affects the flow of gas into your carb once you start using the throttle. Refer to your manual for further jetting and tuning information. Sold Individually.