Boyesen Power Reed Dualstage Yamaha Yz250 01-02 Annex RFX Race Series Spring C

RFX Race Series Spring C Spanner (Black) Universal

KTM SXF520 00-02 front

Re-fit wheel taking care to align the disc into the calliper

TM All 99-01

KTM 250 SX-F 2011-2015

Boyesen Power Reed Dualstage Yamaha Yz250 01-02 Annex RFX Race Series Spring COne 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.