What is Jet size for 200s blaster with fmf gold serious fatty pipe?

For a 200s blaster with an FMF Gold Series Fatty pipe, you will need to jet up your carburetor to accommodate the increased airflow created by the pipe. The recommended jet size for this setup is a 290 main jet. However, it's important to keep in mind that jetting can vary depending on factors such as the specific conditions in your area, such as humidity and altitude, so you may need to adjust the jet size as necessary to ensure optimal performance.

Before changing jets, it's always a good idea to consult the manufacturer's recommendations for your specific model and exhaust system. Additionally, it's important to properly tune the carburetor after changing the jet size to ensure that the engine is operating at its full potential and not running too lean or too rich. If you're unsure how to properly adjust your carburetor, it's best to seek the advice of a qualified mechanic or tuner to assist you.