Boyesen Engineering

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INCREASED AIRFLOW PERFORMANCE

  • INCREASES horsepower and torque in 2-stroke and 4-stroke engines
  • AERODYNAMIC design maximizes velocity generation and power gain
  • WING CHANNEL minimizes disturbance at needle jet without affecting jetting curve
  • PRECISION fit doesn’t reduce size of carburetor bore so there is no loss of power
Motocross.com Rating: "9"
“for the price, we would recommend anyone purchase this product if they are looking for an inexpensive way to improve the power of their big 4-stroke".

See the motocross.com video here
 

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