This Universal Parts #25H chain fits the upper and lower starter motors on 139QMB and GY6 4-stroke engines.
Specifications:
Compatibility: 4T 139QMB and GY6 engines
139QMB-based 50cc / 80cc engines with the following engine codes:
157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.
About Universal Parts: Universal Parts is a line of quality and affordable replacement parts for Chinese scooters! From basic items like bearings and cables all the way up to complete engine assemblies and affordable big bore kits, the comprehensive Universal Parts line can help you get your scooter riding again.
