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47mm QMB139 Non Emissions Head - 69mm Valves PS-151-263

  • $98.99
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Logo 50cc QMB139 4-stroke 47mm, Non Emissions Cylinder Head with 69mm Valves for use with 72cc Big Bore Kit!



  • For Use with 72cc Big Bore Kit
  • Valve Length: 69mm
  • Overall Height: 59.5mm
  • Intake Port Diameter: 17mm
  • Exhaust Port Diameter: 18mm
  • Intake Bolt Hole Spacing: 44.5mm
  • Exhaust Bolt Hole Spacing: 50mm