Rear Centrifugal Clutch Assembly (107mm) for GY6 49cc 50cc 80cc 139QMB Scooter ATV

Product Overview

Revitalize your scooter’s drivetrain with this Complete Rear Centrifugal Clutch Assembly. Specifically engineered for the GY6 50cc series (139QMB/139QMA), this unit serves as the critical secondary link in your CVT system. By replacing your worn-out clutch, you’ll eliminate takeoff vibrations and "clutch chatter," restoring the smooth, snappy acceleration your vehicle had when new. Whether for daily commuting or performance tuning, this assembly is built for maximum power transmission and reduced energy loss.

Product Compatibility

Vehicle Type	Engine Type	Common Brands
Chinese Scooters	GY6 49cc, 50cc, 80cc	TaoTao, Wolf, Peace, Ice Bear
Mopeds	139QMB / 1P39QMB	Kymco, SYM, Bintelli, Gator
ATVs / Go-Karts	50cc–80cc 4-Stroke	TaoTao Pony, Coleman, TrailMaster

Specifications

Feature	Details
Outer Diameter (Drum/Bell)	115mm (4.53")
Inner Diameter (Drum/Bell)	107mm (4.21")
Center Hole Diameter	22mm (0.86")
Engine Fitment	GY6 139QMB Series
Components Included	Clutch Shoes, Springs, Base Plate

Key Features

• Optimized Power Transmission: Engineered to provide a firm "bite" against the clutch bell, minimizing slippage and ensuring engine power is efficiently transferred to the rear wheel.
• Smoother Acceleration: High-quality tension springs are pre-installed to ensure engagement happens at the correct RPM, preventing jerky starts and improving overall ride quality.
• Heavy-Duty Durability: Constructed with heat-resistant friction pads that resist glazing and wear, even under the high temperatures generated by stop-and-go city riding.
• Rapid Response Design: Reduces energy loss during the transition from idle to motion, providing a more responsive throttle feel and improved hill-climbing capability.
• Simple Maintenance: A direct-fit replacement that usually requires no specialized tools for installation, allowing you to save on shop costs and get back on the road quickly.