... in China. It may fit most of Chinese 50cc scooters. This engine is first produced by ... other motorcycle manufacturers. It's engine modol is GY6 50 (139QMB).It usally marked XX50T-X in ... ScootersBuggy, Go-kart, UTV, ATV1FJ1-50A(Bell 107mm)GY6(139QMB) with Kymco, SYM, Honda, Piaggio engine. PGO ... Suzuki Katana 50 2t, SYM DD 50. Many Chinese 50cc scooter like QINGQI,QJMOTOR, LIFAN,ZONGSHEN, XINGYUE, WANGYE ...