Part Type: Electronic sport sound muffler with a control gate/valve. How it works: The sound (opening and closing the gate) is controlled via a wireless electronic system. Remote control. Condition: Used, very clean, in excellent condition, and carefully stored. The muffler body is completely sound and guaranteed, with no welds or defects as shown in the picture. Missing Parts: The remote control is not available (the buyer can easily secure a remote control and transmitter and sync it). Important Note for Disclaimer: The muffler belongs to my brother and has been with me for over 10 years. He installed it previously but doesn't remember its details precisely. What is apparent and confirmed is that it is electronic and requires a remote control as shown in the pictures. The sale is on an as-is basis.