It's a Teikei carb if it's the stock one. Not sure of the model. Pain in the assy because it kinda sucks and finding jets for it is not the easiest either. Most bike shops only stock Keihin and Mikuni jets. Procycle is the best place I've found. Their jet kit for it comes with an assortment, but if you contact them you can ask for specific ones if you know what you want.