Boyesen

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

QuickShot's patent-pending design eliminates hesitation and bog on bikes and ATVs and provides instant response to throttle movementsAdditional benefits are reduced hot engine stalling and improved...

High-volume vertical check valve located in the QS3 for precise, consistent fuel meteringTunable leak jet maximizes volume of fuel and duration of squirt for all conditionsInvestment cast and...

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake portsProvide quicker, sharper throttle response and more horsepower throughout rpm...

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake portsProvide quicker, sharper throttle response and more horsepower throughout rpm...

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake portsProvide quicker, sharper throttle response and more horsepower throughout rpm...

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake portsProvide quicker, sharper throttle response and more horsepower throughout rpm...