QMB139 GY6 50cc Clutch Assembly with bell +139QMB Clutch Spring GY6 50CC
QMB139 GY6 50cc Clutch Assembly with Bell and Clutch Spring
Upgrade your 50cc scooter's performance with this comprehensive clutch assembly, designed specifically for 139QMB and 139QMA engines. It includes a robust clutch bell and a high-performance clutch spring, ensuring reliable power transfer and smooth engagement for your GY6 50cc scooter.
- 118mm Pulley Outer Diameter provides optimal grip and engagement for consistent acceleration.
- 115mm Clutch Bell Outer Diameter ensures a precise fit and durable housing for clutch components.
- 12mm Clutch Inner Diameter guarantees secure mounting and efficient power transmission to the drivetrain.
- 104mm Shoe Outer Diameter offers ample surface area for smooth, progressive clutch engagement.
- 22 Splines on Clutch Bell provide a strong, secure connection, vital for high-performance applications.
Compared to stock or older clutch systems, this assembly offers enhanced durability and responsiveness. The inclusion of a 6901-RS bearing signifies a dedication to quality and longevity, reducing friction and wear for extended service life. The included clutch spring, measuring 32mm in length and 7.65mm in width, is engineered to deliver optimal engagement RPMs, contributing to sharper acceleration and better overall performance, especially for models seeking a high-performance edge.
Engineered for Superior Performance and Durability
This clutch assembly is built with performance in mind, integrating key components like the clutch bell and spring to work harmoniously. The precise dimensions across the pulley, bell, clutch, and shoes are calibrated to meet the demands of 50cc GY6 engines, particularly those derived from the 139QMB/QMA platforms. Whether you're replacing a worn-out part or seeking to enhance your ride with high-performance upgrades, this clutch kit delivers the reliability and efficiency you need for a superior riding experience.