Boyesen Power Reed Trial Beta Evo 250-300 09-21 Bike Maintenance Pivot Works Swing Arm Bearing

Pivot Works Swing Arm Bearing Kit Yamaha YZ125 05-22

not too loose

450 EXC-F 17-19

250 XC 2010

Boyesen Power Reed Trial Beta Evo 250-300 09-21 Bike Maintenance Pivot Works Swing Arm BearingOne 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.