All CE 200 series regulators share the same internal circuitry

They are tapped for 1/2"-13 coarse thread

Also popular on choppers and bobbers

See the example diagram above to see how these handlebars are measured

This clutch hub is as direct replacement for Harley-Davidson OEM # 37550-41B

Main Jet 240 for Concentric or Monobloc Carbs Bung Type_Handlebar Riser All CE 200 series regulatorsThese 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.