Boyesen Power Reed Dualstage Yamaha Yz250 97-98 Armega wicking material with strategically placed

wicking material with strategically placed knee brace reinforcement panels

New ergonomic construction with sport cut for a more precise performance fit

Yamaha YZ450F 03-07 front

· KTM 350EXCF / 450EXCF / 500EXCF 2020

Boyesen Power Reed Dualstage Yamaha Yz250 97-98 Armega wicking material with strategically placedOne 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.