Boyesen Power Reed Trial Beta Evo 250-300 09-21 Bike Maintenance 450 EXC-F 17-19

450 EXC-F 17-19

SIDE PANEL - BLACK (OEM 18-22)

Pivot Works Swing Arm Bearing Kit Yamaha YZ125 05-22

250 XC 2010

2 D cm (expanded)

Boyesen Power Reed Trial Beta Evo 250-300 09-21 Bike Maintenance 450 EXC-F 17-19One 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.