External Testing Certification: CCC With excellent fit and durability, high-performance belts can provide maximum power transmission. Designed for excellent fit, performance and durability. Drive belts provide superior strength, enhanced dimensional integrity and stability, which can extend the life of the belt. This design ensures the flexibility of the belt, enabling excellent CVT operation under conditions where speed and torque loads vary greatly. Product Description Motorcycle Drive Belt,if the size is same as your old belt,it will fit. Availbe sizes: 669-18-30 729-17.7-30 743-20-30 788-17-28 835-20-30– 842-20-30 Belt specification for example: 669-18.1-30 (length – width- wedge degree) Please compare with your old drive belt before purchase. Package including:1 x drive belt Shopping tips: Model 669 18.1 30 belt is usually used for GY6 50 60 80cc (matching 10-inch wheels, common 48cc). Model 729 17.7 30 is usually used for GY6 80cc long box version (with 12-inch wheels, rare).