QMB139 Performance Valve Set, Absolutely Scooters & Supply
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$19.99

QMB139 Performance Valve Set
[220198]

QMB139 Performance Valve Set

Performance QMB139 Valve Set

Replacement QMB139 Valve Set for the Cylinder Heads used on 50cc QMB139 4-stroke engines and engine based vehicles.  Most 50-90cc 4-stroke Chinese Scooters & belt drive ATVs use these unless they have the 69mm tall version, please measure yours before ordering.
 
Specs
  • Intake Valve Diameter: 18.5mm
  • Exhaust Valve Diameter: 16mm
  • Intake & Exhaust Valve Overall Length: 64mm
  • Intake & Exhaust Valve Stem Diameter: 5mm
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