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Fits internal axle hex on many late model sportbikes and some dirt bikes
that allowed the use of legs a lot more due to the wider wings
Kawasaki KX65/80/85/100/125/250 00-13
The combined performance of the knee
Boyesen Power Reed Dualstage Yamaha Yz250 03-04 4.5 Enduro Fits internal axle hex onOne 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.
