Boyesen Power Reed Set - Kawasaki 639

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low...

Laboratory flow analysis proves Boyesen? dual-stage reeds out-perform standard reedsThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low...