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"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 Racing Variator Set
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Racing Variator Set for QMB139 50cc 4-stroke engines and scooters. **Note: This is a non-returnable item. Please confirm this is the correct item prior to purchasing. Please see our Warranty & Returns for further detail.
Specifications
  • Roller Weights: 7 grams
  • Spline Count: 26
  • Inner Diameter (drive plate): 13mm
Supported Models
Baron, ZNEN, Panterra Fusion 50cc, X-Treme, Lifan, Qingqi, Qingqi QM50QT-6V, Vento, SUNL, Various unlisted makes/models, Tank, Strada, Wildfire, CFMoto, Schwinn Laguna 50, Schwinn Hope 50, QMB139 50cc/49cc , SYM, Kymco, Bashan, Avanti, Dotera, Ventro Triton R4 03', Baotian, Baotian BT50QT-11 , Diamo, Boss, Roketa, Bravo, Qingqi QM50QT-4G, Baja SC50, Baja SC50-P, Baja, Honda, Schwinn, Eton, Panterra Retro 50cc, Panterra Freedom 50cc
  Part Number: 169-170
  Old Part Number:
 
 
 
 
 
   
Gates Powerlink 669-18-30 CVT Drive Belt  (*Click* for in-stock date)
 
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Gates Powerlink Standard CVT Drive belt size 669-18-30. Commonly found on 50cc 4-stroke QMB139/GY6 engines.
Price: $24.99
 
QMB139 Roller Weights 16x13
 
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Prima Roller Weights for 50cc 4-stroke QMB139 engines.
Price: $13.99