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Cylinder Head - Universal Parts 50mm QMB139 Complete Non Emissions Cylinder Head 69mm Valves > Part#151GRS266

  • $ 6999

Grand Rapids Scooter - Engine Parts

50cc QMB139 4-stroke 50mm, Non Emissions Cylinder Head with 69mm Valves for use with 81.3cc Big Bore Kit!

  • For Use With 81.3cc Big Bore Kit
  • Valve Length: 69mm
  • Overall Height: 59.5mm
  • Intake Port Diameter: 18mm
  • Exhaust Port Diameter: 17mm
  • Intake Bolt Hole Spacing: 44.5mm
  • Exhaust Bolt Hole Spacing: 50mm

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