Boyesen Power Reed Dualstage Yamaha Yz250 99-00 Soft 450 EXC-F 12-16

450 EXC-F 12-16

Easily adjustable with elastic straps for an excellent fit

LED-light attachment points: Front and back

CRF 150F 03-17

Boyesen Power Reed Dualstage Yamaha Yz250 99-00 Soft 450 EXC-F 12-16One 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.