Small size electronic exhaust valve, fits most motorcycles, sizes are shown in the pictures. Features: * Significantly helps reduce motorcycle noise, especially if you have an aftermarket exhaust. * Compatible with most aftermarket exhausts with a 51mm opening. * You can control the sound using the switch; turn it on to reduce the sound, and turn it off to return the motorcycle's sound to loud and open. * Brand new and never used. Location: Al-Ahsa For WhatsApp contact: 0597747074 Please check the sizes attached in the pictures before purchasing to ensure compatibility with your motorcycle.