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Being the biggest

is not our quest,

being the best is 

  • Single Stage configuration for improved performance throughout the rpm range
  • V-Block Design
  • CNC-Machined from High Grade Aluminum
  • Engineered for Improved Fuel Delivery
  • Polished Surfaces for a Better Seal
  • Decreased crankcase volume for improved fuel transfer pressure
  • Fiber-Reinforced Composite Expoxy Coated Reed Petals
  • Fits 2005'-2021' YZ125


  • Comes assembled and includes new gasket, new intake flange, and Gizmo Stuffer Reed valve Assembly.

Gizmo YZ125 Stuffer Reed Valve System 2005'-21'

SKU: SKU-110
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