Yamaha - Throttle body assy - 6P2-13750-00-00Yamaha Throttle Body Assembly Air Intake Component 6P2 13750 00 00 Overview Throttle response is one of the first things you notice when somethings off with an engine. Ive worked on setups where the motor felt sluggish or uneven, and it came down to the throttle body not doing its job cleanly. When this assembly is right, airflow stays smooth and the engine reacts exactly how you expect it to. Its a key piece in keeping acceleration crisp and control