## Unlocked Muffler Kit Long Tube 139QMB/QMA (GY6 50) 4T This complete muffler kit with catalytic converter is the perfect solution for your 139QMB/QMA (GY6 50) 4T scooter. It offers not only excellent performance but also cares for the environment thanks to the built-in catalytic converter. ### Key Features: * **Easy installation:** The muffler is attached with three screws to the exhaust elbow, guaranteeing quick and easy installation. * **Perfect fit:** Designed to perfectly match the original exhaust system, ensuring optimal engine performance. * **Compliance with noise standards:** The muffler meets applicable noise standards, so you can enjoy a comfortable ride without excessive noise. * **Built-in catalytic converter:** Care for the environment by reducing exhaust emissions. ### Why choose this muffler? This muffler is an excellent choice for those looking for a high-quality, reliable, and environmentally friendly solution. It ensures optimal engine performance while caring for riding comfort and meeting applicable standards. The solid construction guarantees a long service life, and the precise workmanship ensures a perfect fit. **NOTE:** Before purchasing, carefully compare the muffler attachment method shown in the photo with the attachment on your vehicle. Over the years, there have been different types of attachments that do not always match!