- High-volume vertical check valve located in the QS3 for precise, consistent fuel metering
- Tunable leak jet maximizes volume of fuel and duration of fuel spray for all conditions
- Integrated Hot Start Assist eliminates problem 4-stroke hot start procedure
- The most effective way to add performance to a Keihin FCR carburetor
- Patented design stops bogging and improves throttle response
- Investment cast and finished to precise tolerances
- Improved low-end performance
- Simple bolt-on installation
- 25% more fuel capacity
- For all Keihin FCR-Equipped MX, Off Road and ATV models.
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Fitment
Fitment
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Reviews
Reviews
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Spec Sheet
- BrandBoyesen
- SKU10500228
- UPC804429509881
