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Rear Centrifugal Clutch Assembly (107mm) for GY6 49cc 50cc 80cc 139QMB Scooter ATV
Rear Centrifugal Clutch Assembly (107mm) for GY6 49cc 50cc 80cc 139QMB Scooter ATV
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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.
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Fitment FAQ
Will this part fit my specific model and year?
This clutch assembly is intended for Vehicle Type; Engine Type; Common Brands; Chinese Scooters; GY6 49cc, 50cc, 80cc; TaoTao, Wolf, Peace, Ice Bear; Mopeds. Key physical/spec details from the product data include Outer Diameter (Drum/Bell): 115mm (4.53"), Inner Diameter (Drum/Bell): 107mm (4.21"), Center Hole Diameter: 22mm (0.86"). Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this clutch assembly, also compare the spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform. This is especially important for GY6/TaoTao GY6 models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this clutch assembly for machines outside the listed compatibility, or for units with different spline counts, clutch-bell sizes, pulley diameters, or engine platforms. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform. Recheck listed specs such as Outer Diameter (Drum/Bell): 115mm (4.53"), Inner Diameter (Drum/Bell): 107mm (4.21"), Center Hole Diameter: 22mm (0.86"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.