50cc 49cc QMB139 scooter Roller Weights: 150cc and 125cc 4-stroke QMI152/157 QMJ152/157:

Select a language

"I have owned 5 different scooters over the years. 250cc CFMOTO, Roketa 150cc 4-stroke GY6, United Motors 50cc 2-stroke and a SunL 50cc 4-stroke QMB139. I can rest assured that no matter what make or model I have, Partsforscooters.com will always have the parts I need. I was impressed by your sales staff's knowledge of both stock and performance after-market parts. Shoot...I have a new performance muffler (169-3) for my Roketa 150cc that turned it from BLAH to YAH! Street Scooters, ATVs, Dirt Bikes, you name it and these guys have the parts. Keep rockin and rollin with your excellent service. You have a customer for life!"
Mike R.-California

"I am not a rich man, but I wanted my family to enjoy ATV riding. I bought three different Chinese made ATVs; a 250cc for me, 110cc for my wife and a 110cc for my son. Lots of people said beware, because you can't get parts for them. But, I found you guys online and all 3 of my orders shipped quickly. Beware of nothing, because Partsforscooters.com makes it easy and obtainable on my budget." Jeff A.


	QMB139 Roller Weights 16x13

Part Number: 169-149

Old Part Number:

Roller Weight Size

Quick Links

Shipping Options | Return Policy | Questions?

Photo Gallery

Prima Roller Weights for 50cc 4-stroke QMB139 engines. The QMB139 is the most popular 50cc 4-stroke engine found on Chinese scooters.

We recommend starting performance upgrades by changing the variator roller weights first.

Heavier roller weights=Ãƒâ€š A slower take off speed with more acceleration and a higher top speed.

Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Please see our Warranty & Returns Policy.

Size: 16x13

Kymco Filly 50, Panterra Retro 50cc, Tank Classic 50QT-6, SUNL SL50QT-16, QMB139 50cc/49cc , Qingqi QM50QT-6V, Various unlisted makes/models, Baja SC50, Panterra Fusion 50cc