• Fits most 50cc up to 100cc 4-Stroke Chinese Scooters GY6 QMB139 (139QMB 1P39QMB)
  
  
• Includes: Head Pipe Muffler with Gasket and Mounting Hardware
  
  
• Muffler is approximately 3.5" in diameter x 12" long (not including the exhaust tip).
  
  
• Aftermarket replacement, great performance at an affordable price, without sacrificing quality.
  
  
• Pipe mounting screw holes are 50mm apart. 22mm inlet.

Recommended Professional Installation: Although our products are designed to be efficient and easy to use, we strongly recommend that a professional mechanic or certified technician perform the installation. This ensures that the product is installed correctly and complies with applicable codes and regulations. Installation instructions are not included. Installation hardware is not included.