Description
Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.
Product Description
MMG High-Performance Racing Variator Kit for Chinese Scooter Moped ATV 4-Stroke GY6 50cc 80cc 100cc 139QMB 139QMA Engine Front Clutch
- Racing variator kit for 50/100cc 4 Stroke engines
- Better performance
- Improves acceleration and top-end speed compared to stock/restricted CVT
- Fits 50cc/100cc 4 Stroke GY6/QMB139 engines
- Inexpensive replacement for OEM variator
- Updates CVT and rear clutch
Includes:
- (6) 5 grams roller weights
- (3) 7 grams roller weights
- Rollers can be combined to achieve 5,6 and 7 grams setups.
- 3 sliders
- CVT Fan
- 3 1000 RPM clutch springs for the rear clutch
- CVT shaft
Vehicle information
Available fitment details
Listing compatibility notes
- 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.
Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.
Parameters, dimensions, material, fitment, and part numbers
Buying guidance
Quick decision
A clutches listing with source specifications kept visible for comparison.
Fit and size notes
- 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.
Before you buy
- Compare the listing title, photos, package contents, and specifications with the part being replaced.
- Confirm vehicle compatibility and installation requirements before ordering.
Customer feedback
Ratings and written reviews
4.0 / 5
128 source ratings
Source: Amazon. Imported marketplace feedback is shown for product research and is not a review of a purchase made on this website.
Ukumehame –
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 –
Increase in speed, very happy. Seems to be working better than OEM.
Gr1221 –
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 –
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 –
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 –
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 –
Its alright for the price kinda like the stock one I don’t notice a difference
scott a. –
Roller weights are way off .I got3x5g3x 6.8g3x 8.8gAlso the paint is coming off and messing the rollers up.
robert bamforth –
good