Boyesen Power Reed Dualstage Yamaha Yz125 00 Chain Sliders Knurled knob on adjuster drivers

Knurled knob on adjuster drivers ensure a precise and secure grip

Puller design ensures bearing is pulled perfectly straight to eliminate possible damage to frame

Use with any type of gasoline

SIDE PANEL - FLUORESCENT RED

Boyesen Power Reed Dualstage Yamaha Yz125 00 Chain Sliders Knurled knob on adjuster driversOne 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.