This is theMotoTec Universal Parts QMB139 COMPLETE VARIATOR KIT, 151-219.

Universal Parts Complete Variator Set for 50cc 4-stroke QMB139 engines.

Product Specifications:

• SKU: 151-219
• Number of Teeth (drive face): 62
  
• Number of Splines (drive face): 26
  
• Outer Diameter (variator): 87mm
  
• Roller Weight: 6.5g