Boost your scooter's acceleration and throttle response with this aftermarket variator kit designed for QMB139 50cc 4-stroke engines. Ideal for riders seeking better performance or a replacement for worn OEM parts, this variator kit is engineered for smooth power delivery and reliable CVT operation.
Compatible with most Chinese 50cc scooters using the GY6 short-case (QMB139) platform, this performance-driven variator improves belt grip and gear shifting across the speed range.
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Fits: QMB139 50cc 4-stroke engines (GY6 short-case)
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Type: Aftermarket high-performance CVT variator kit
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Includes: Variator face, ramp plate, backing plate, center boss, roller weights
