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  • Tunable leak jet circuit maximizes volume of fuel and duration of fuel spray for any condition
  • Investment cast and finished to precise tolerances
  • High volume vertical check valve located in the QS3 for precise, consistent fuel metering
  • Stops hesitation and bog
  • Instant throttle response
  • Improved low end performance
  • Fits all Keihin FCR carbs
  • Simple bolt-on installation