Complete Exhaust System Complete Exhaust Muffler Stock For QMB139/50cc 4 Stroke Engines Scooters Scooter Exhaust Muffler Like Tao Tao, Jonway, Tank, Rocketa Fits 50cc/100cc 4 Stroke GY6/QMB139 Engines with 10 inch wheels. Note: 12 inch wheel engines usually require a longer exhaust that in most cases is attached to the RH shock absorber. Fitment Fits most 50cc/80cc QMB/GY6 based Chinese Engines Dimensions: Exhaust Bolt Hole Spacing: 2 inches (51 mm) | Inner diameter at the cylinder head (18 mm) | Overall Length: 26 inches | Muffler Length: 13 inches | Exhaust Pipe Length: 13 inches. Aazon.co: High Perforance Full Exhaust Syste uffler for GY6 125cc Premium Quality Material: Crafted from high-grade materials for durability and longevity, ensuring a reliable performance for your 50cc scooter. Performance: Designed to optimize exhaust flow, promoting better engine efficiency and overall performance. Complete Exhaust for QMB139 50cc Scooters – GoKarts USA Note: 12 inch wheel engines usually require a longer exhaust that in most cases is attached to the RH shock absorber. Compatibility: This muffler will fit many Chinese gas scooters with a GY6 QMB139 4-stroke type of engine. Ex: Roketa, Sunl, Baja, Kazuma, Carroll Stream Eagle, Taotao, Panterra, Kymco, Redcat Tank Giovanni Wildfire Xtreme Seaseng Qlink Yiben Jonway Jmstar, Vento, Tng and Various unlisted makes/models.
