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GY6 61mm Performance cylinder head

  • Sale
  • $110.00


If you are doing a 61mm 171cc big bore kit and want to kick it up a bit more here ya go. This will fit all qmj157 and qmj152 engines.

  • Exhaust Valve Diameter: 23mm
  • Intake Valve Diameter: 27.75mm
  • Exhaust Port Diameter: 26.5mm
  • Intake Port Diameter: 27.5mm