Boyesen Power Wing Yamaha Yz450F 07-11, Wr450F 07-11 Use Pw-32 GPX 5.5 TPU features is combined with

TPU features is combined with ventilation zones and a new air flow system sole for breathability and superior ventilation

an abrasion and cut resistant brush guard protective film is used to reinforce the elbow construction

Ds patented X-Ring is superior to other O-Ring designs

Size guide The measure indicated refers to the circumference of the head

350 EXC-F 20-23

Boyesen Power Wing Yamaha Yz450F 07-11, Wr450F 07-11 Use Pw-32 GPX 5.5 TPU features is combined withThe Boyesen Powerwing is the perfect air delivery enhancement upgrade used to increase horsepower and torque by maximizing your intake system. The Powerwing's unique design maximizes airflow to increase horsepower, torque and responsiveness, without restrictions to your existing carburetor. Precision fit engineering ensures easy installation in each make and model available. The Boyesen Powerwing is designed to increase air velocity inside your