As you can see, it's an electronic muffler, 3 inches, with a remote control (special, not general, meaning no one can control it but you). The muffler has been with me for 3 months, its use is great, and its sound is musical. It has no leaks and no complaints. Your eyes are your judge, and you have the right to inspect it. For sale to the highest bidder. You can buy the muffler alone or the muffler with the remote control, the choice is yours. For sale to the highest bidder.