Boyesen Power Reed Dualstage Kawasaki Kx250 04 Front · Honda CRF150F 2017Â /

· Honda CRF150F 2017Â / CRF230F 2017Â

CRF250RX 22-24

Increase coolant flow at all RPM ranges

FC450 14-18

air injection into exhaust pipe) requiring API SM standard

Boyesen Power Reed Dualstage Kawasaki Kx250 04 Front · Honda CRF150F 2017Â /One reed petal is NOT enough! Boyesen's revolutionary dual stage reed design delivers more usable power than stock. Stock single stage reeds operate most effectively within a relatively narrow RPM range and are limited because of the single stage design. Boyesen's one soft reed on top of one firm flow through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance.