Drive Belt 49cc QMB139 Scooters

You first need to determine if your scooter has a short case or a long case. Short case is the most common. If you have 10 inch wheels, you have a short case. If you have 12-13 inch wheels, your scooter has a long case. We even carry an extra long belt for you Maddog riders! Look on the engine case and be sure your engine is a QMB139. This is the most common 49cc Chinese scooter engine.The engine code is located on the left side. It is stamped right next to the center kickstand pivot point.