So you've upgraded your Ruckus carb to the PC20, take advantage of the carburetor upgrade by getting the proper main jet set. By having the right jets, you can get the full potential from the carb and tune it to your needs. Available here are Genuine Keihin PC20 Carburetor Main Jets. Available sizes are from 75-88 and 90-105
Applications:
Keihin PC20 Style Carburetor
75-88 Keihin PC20 Main Jet includes 75, 78, 80, 82, 85, 88
90-105 Keihin Ruckus Main Jet Includes 90, 92, 95, 98, 100, 105