QMB139 50cc, 4-stroke Performance Exhaust Round, Part #190-37

Stainless Steel Round After-Market Performance Exhaust for QMB139 50cc 4-stroke engines. Round Muffler. Head Pipe Bolt Hole Spacing: 50mm. Head Pipe Inner Diameter: 25mm. Muffler Overall Length: 16.5 inches. Includes Removable Silencer. Includes Mounting Kit with Premium Gasket.