Boyesen Power Reed Dualstage Yamaha Yz250 97-98 Hydration & Backpacks RFX Race Series Discs are

RFX Race Series Discs are surface ground to within 0

· Husqvarna TE150i / TE250i / TE300i 2020

Enduro tyre for soft and mixed terrain

TE 125 14-16

· Yamaha WR450F 2020

Boyesen Power Reed Dualstage Yamaha Yz250 97-98 Hydration & Backpacks RFX Race Series Discs areOne 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.