Fuel Management

The latest carbon fiber technology with all the advantages of Boyesen's dual-stage reed designQuickest acceleration any reed can offer, maximizing horsepower and torque Yamaha -- Banshee 350 4x2 -- (1992, 1993, 1991, 1994, 1995, 1990, 1997, 1989, 1996,...

The latest carbon fiber technology with all the advantages of Boyesen's dual-stage reed designQuickest acceleration any reed can offer, maximizing horsepower and torque Yamaha -- Blaster 200 4x2 -- (1992, 1995, 1994, 1997, 1989, 1990, 1993, 1991, 1998,...

The latest carbon fiber technology with all the advantages of Boyesen's dual-stage reed designQuickest acceleration any reed can offer, maximizing horsepower and torque Kawasaki -- KX 500 -- (2000, 2001, 1999, 2002, 1987, 1990, 1997, 1992, 1998, 1994,...

The latest carbon fiber technology with all the advantages of Boyesen's dual-stage reed designQuickest acceleration any reed can offer, maximizing horsepower and torque Suzuki -- RM 125 -- (1993, 1992)

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 rangeSpecially-designed reed cage holds Boyesen's patented...

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 rangeSpecially-designed reed cage holds Boyesen's patented...

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 rangeSpecially-designed reed cage holds Boyesen's patented...

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 rangeSpecially-designed reed cage holds Boyesen's patented...

Developed with Factory Yamaha, Pro Circuit, Factory Kawasaki of Europe, Factory KTM and top pros like Jeremy McGrath, Sebastian Tortelli and many othersMaintain flow velocity through the valve and redirect intake charge for even distribution to intake...

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 rangeSpecially-designed reed cage holds Boyesen's patented...

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 rangeSpecially-designed reed cage holds Boyesen's patented...

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 rangeSpecially-designed reed cage holds Boyesen's patented...