Boyesen Power Reed Dualstage Yamaha Yz65 18-22 Workstands X-ring and Z-ring chains

X-ring and Z-ring chains

• NanoGrip palm

· Kawasaki KLR650 1993

Velocity Flow ventilation

· KTM 250EXCF 2011

Boyesen Power Reed Dualstage Yamaha Yz65 18-22 Workstands X-ring and Z-ring chainsOne 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.