## Rear Transmission Case 139QMB/QMA (GY6 50) 4T This rear transmission case is an essential part for any owner of a scooter with a GY6 4T 139QMB/QMA engine. Made of high-quality materials, it guarantees durability and reliability even in demanding operating conditions. Its precise design ensures a perfect fit and hassle-free installation. ### Why choose this transmission case? * **Solid construction:** The rear transmission case is designed for strength and resistance to mechanical damage, which translates into a long service life. * **Compatibility:** Perfectly fits GY6 4T 139QMB/QMA (50) engines, making installation easy and eliminating fitment issues. * **Reliability:** Ensures smooth and trouble-free operation of the transmission, which affects the comfort and safety of the ride. * **Optimal performance:** Allows for maintaining optimal engine and transmission performance parameters. This rear transmission case is an investment in the long and trouble-free operation of your scooter. By ensuring stable and efficient operation of the drive system, it contributes to a comfortable and safe ride.