Boyesen Power Reed Dualstage Yamaha Yz250 78-82 + 89 Casual Clothing Stainless steel shoulder bolt pivot

Stainless steel shoulder bolt pivot

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

CNC Machined for a tighter tolerance

David Philippaerts DP19 TEAM World Championship MXGP 450

Boyesen Power Reed Dualstage Yamaha Yz250 78-82 + 89 Casual Clothing Stainless steel shoulder bolt pivotOne 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.