Boyesen Power Reed Dualstage Yamaha Yz250 78-82 + 89 Casual Clothing YZ450FX 16-18

YZ450FX 16-18

Stainless steel shoulder bolt pivot

400/600/620/625/640 LC-4

For something with more protection check out the 4

CNC Machined for a tighter tolerance

Boyesen Power Reed Dualstage Yamaha Yz250 78-82 + 89 Casual Clothing YZ450FX 16-18One 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.