## Abiwa Complete Rear Transmission for 139QMB/QMA (GY6 50) 4T Engines Upgrade your 50cc scooter with the Abiwa Complete Rear Transmission, a comprehensive solution for 139QMB/QMA (GY6 50) 4-stroke engines. This all-in-one kit provides everything you need for a smooth and efficient power transfer, ensuring optimal performance and reliability. Built with Abiwa's commitment to quality, this transmission is designed for long-lasting durability and ease of installation. ### Complete Transmission Kit - Ready to Install This Abiwa transmission kit includes all essential components, simplifying the replacement process and saving you valuable time and effort. The comprehensive kit includes: * **Clutch Shaft:** Provides a reliable connection between the clutch and the transmission. * **Counter Shaft:** A key component in transferring power within the transmission. * **Drive Shaft with Teeth:** Ensures efficient power delivery to the rear wheel. * **Gear Wheel:** Works in conjunction with the drive shaft for smooth and precise gear changes. * **Seals:** High-quality seals prevent leaks and ensure optimal performance. ### Precise Fit and Compatibility This transmission is engineered to precisely fit 139QMB/QMA (GY6 50) 4-stroke engines, guaranteeing seamless integration with your scooter. Key dimensions include: * **Clutch/Counter Shaft Length:** 155mm/126mm * **Drive Shaft Diameter:** 69mm with 52 teeth * **Gear Wheel Diameter:** 81mm with 51 teeth * **Shaft Threads:** M10/M16 Refer to the provided images for detailed dimensional specifications. ### Invest in Quality and Performance Choosing the Abiwa Complete Rear Transmission means investing in a reliable and durable solution for your scooter. With its comprehensive design and precise engineering, this transmission ensures smooth operation and optimal performance for a superior riding experience. Upgrade your scooter today and experience the difference Abiwa quality makes.