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

I have yet to install but iv purchased a few before thus one and I will say compared to others this one feels and looks well made. I will say you most likely will need better quality rollers but the variator itself is good

Wonderful mod for any gy6 engine. My 80cc big bore moped now has tons of power and doesn’t bog down at certain speeds. This variator keeps the proper rpm all the way throughout the shift range. Takeoff is par none and low to mid speed acceleration is great. I can reach top speed and there’s still room for more shifting because I don’t feel the rpm increase unless I’m goin go downhill,

Solid variator for the price. weight ramps have a smoother transition that stock variator, and comes with a nice selection of 5 and 7 rollers for some adjustibility if you do not already have a roller tuning set. However, stock fitment of the sliding bushings onto the variator could leave some to be desired, and I had to sand them down slightly to achieve smooth action. However, for the price point, I cannot complain.

I am very happy with this kit. The variator is light weight, and may wear quickly, but it shifts very smoothly compared to oem replacement. The rollers seem to be decent quality as well, though there is some variation in weight by +/- 0.1g.

It was broken and missing piece. See how this return process goes