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Front Variator Clutch Assembly for GY6 50cc 4-Stroke Scooter, Moped, ATV & Go-Kart
Front Variator Clutch Assembly for GY6 50cc 4-Stroke Scooter, Moped, ATV & Go-Kart
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Product Overview
Revive your scooter's transmission with this Complete Front Variator Clutch Assembly. Specifically designed for the ubiquitous GY6 50cc 4-stroke engine, this kit is the heart of your CVT (Continuously Variable Transmission) system. It includes the drive face, boss, and rollers, all manufactured from high-temperature resistant materials to prevent performance "fading." Whether you’re dealing with sluggish take-offs or worn-out components, this assembly restores stable characteristics and high reliability to your drivetrain.
Product Compatibility
| Vehicle Type | Engine Type | Common Brands |
| Chinese Scooters | GY6 50cc (139QMB) | TaoTao, Peace, Wolf, Ice Bear |
| Mopeds | 50cc 4-Stroke | Bintelli, Kymco, SYM, Gator |
| ATVs / Go-Karts | 50cc GY6 Platform | TaoTao Pony, Coleman, TrailMaster |
Specifications
| Feature | Details |
| Outer Diameter (Drive Face) | 90mm (3.54") |
| Piston Pin (Boss) Diameter | 14mm (0.55") |
| Piston Pin (Boss) Length | 33mm (1.29") |
| Engine Fitment | GY6 50cc 139QMB / 1P39QMB |
| Material | High-Grade Wear-Resistant Alloy |
Key Features
- High-Temperature Resilience: Constructed from materials engineered to withstand the extreme friction and heat of a CVT belt system, effectively reducing wear and tear over long-distance rides.
- Enhanced Structural Stability: Precision-balanced drive face ensures smooth rotation at high RPMs, reducing engine vibration and protecting your crankshaft seals.
- Optimized Shift Curve: Designed to provide a consistent gear-ratio transition, improving both low-end acceleration and top-end cruising stability for a better overall riding experience.
- Direct OEM Replacement: Sized specifically to 90mm with a 14mm boss to ensure a perfect fit on standard Chinese 50cc 4-stroke crankshafts without the need for modifications.
- Long Service Life: Features stable characteristics and high reliability, making it a "fit-and-forget" solution for daily commuters and off-road enthusiasts alike.
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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 50cc (139QMB); TaoTao, Peace, Wolf, Ice Bear; Mopeds. Key physical/spec details from the product data include Outer Diameter (Drive Face): 90mm (3.54"), Piston Pin (Boss) Diameter: 14mm (0.55"), Piston Pin (Boss) Length: 33mm (1.29"). 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 (Drive Face): 90mm (3.54"), Piston Pin (Boss) Diameter: 14mm (0.55"), Piston Pin (Boss) Length: 33mm (1.29"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.