MMG High-Performance Racing Variator Kit for Chinese Scooter Moped ATV 4-Stroke GY6 50cc 80cc 100cc 139QMB 139QMA Engine Front Clutch
$28.90
Rated 4 out of 5 based on 128 customer ratings
128 ratingsSource: Amazon
Confirm quantity, package contents, selected variation, current offer details, and store terms before placing the order.
About this item
- 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.
Before you order
- Confirm the part number, position, dimensions, and connector details shown on this page.
- Compare the listing with the part currently installed on your vehicle.
Ukumehame –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
This is one of the first things to change on your scooter/ moped to gain more top speed, along with a gear ratio swap, free flowing exhaust , Big Bore kit, and a Bigger carburetor or re-jetted stock carb!
steve –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
Increase in speed, very happy. Seems to be working better than OEM.
Gr1221 –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
Installed (minus the clutch springs) in my QMB 139 scooter and immediately saw an improvement. This kit, an iridium spark plug, and performance coil has me taking hills at least 8mph faster than stock with my Bintelli Sprint. Once my new 38mm socket is delivered, I will add the clutch springs and see if that adds more to my scoots performance! Great upgrade!
Mr. K –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
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.
Christian –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
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,
Joshua Kenney –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
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
Isaac –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
Its alright for the price kinda like the stock one I don’t notice a difference
scott a. –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
Roller weights are way off .I got3x5g3x 6.8g3x 8.8gAlso the paint is coming off and messing the rollers up.
robert bamforth –
Imported from Amazon. This is not a review of a purchase made on this website.
External marketplace context: Verified Purchase
good