Front Variator Clutch Assembly for GY6 50cc 4-Stroke Scooter, Moped, ATV & Go-Kart

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.