Fuel System

Eliminates hesitation and boggingBetter holeshotsProvides instant response to throttle movementsStarts easierReduces hot engine stallingImproves low end performanceBolt-on product that requires no modificationNew 2nd generation products use left hand...

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Each kit contains float bowl gasket (or o-ring), float valve assembly (or float needle) and o-rings to rebuild one OEM carburetor body.Made in Japan.

Boyesen Engineering has now released the NEW QuickStart. Hot engine starting is no longer a problem and is available for ALL Keihin FCR carbureted MX, Offroad and ATV models. The patented performance of the proven QuickShot system, now with adjustable...

Boyesen Engineering has now introduced the NEW QuickShot 3. This bolt-on performance accelerator pump cover eliminates bog, improves throttle response and offers hassle free leak jet circuit tuning. Currently available for ALL Keihin FCR carbureted MX,...

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low-pressure (Lowthrottle) responseGreater velocityGreater flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low-pressure (Low-throttle) responseGreater velocityGreater flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low pressure (Low-throttle) responseGreater velocity and flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low pressure (Low-throttle) responseGreater velocity and flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low pressure (Low-throttle) responseGreater velocity and flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low pressure (Low-throttle) responseGreater velocity and flow areaLonger overall lifeNo engine damage if broken

Dual stage reedsMinor change gives major H.P. improvementsFaster opening and closingGreater low-pressure (Low-throttle) responseGreater velocityGreater flow areaLonger overall lifeNo engine damage if broken