Boyesen Power Reed Dualstage Yamaha Yz250 03-04 4.5 Enduro that allowed the use of

that allowed the use of legs a lot more due to the wider wings

whereas the impact panels on the knuckles and fingers absorb energy from roost

KTM 350 XC-F 2013-On>

KTM 530 XCF-W Six Days 2009-2012

Fits internal axle hex on many late model sportbikes and some dirt bikes

Boyesen Power Reed Dualstage Yamaha Yz250 03-04 4.5 Enduro that allowed the use ofOne 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.