MMG High-Performance Racing Variator Kit for Chinese Scooter Moped ATV 4-Stroke GY6 50cc 80cc 100cc 139QMB 139QMA Engine Front Clutch

Reviewed by more than 18 consumers, more than 100% of the reviews about this MMG drive train had positive sentiment, meaning that these customers would probably advise purchasing this product when asked about a recommended drive train, transmission, clutch, complete clutch set, and transmissions & part.

Features:

• Fits 50cc 100cc 4 Stroke GY6 QMB139 engines
• 6 5 grams roller weights
• 3 7 grams roller weights
• Rollers can be combined to achieve 5,6 and 7 grams setups.
• Improves acceleration and top end speed compared to stock restricted cvt.