Full Engine Bearing Kit – GY6 50cc 139QMB / 139QMA

The complete engine bearing kit for GY6 50cc is designed to replace all internal bearings in 139QMB and 139QMA engines during a complete overhaul or rebuild.

Essential when replacing the crankshaft or during an engine rebuild, this kit restores optimal engine operation while reducing vibrations and premature wear of internal components.

Benefits and advantages:

• Reduced engine vibrations
  
• Smooth rotation of internal components
  
• Increased engine reliability
  
• Ideal for complete rebuilds
  
• Replacement of worn or noisy bearings