Boyesen Power Reed Dualstage Polaris 90Cc Hazardous Stretchnet zones on the full

Stretchnet zones on the full back of the lower legs deliver superior airflow

TM MX300 98-00 rear

Adjustable and removable shoulder padding for a customized fit

2017-2020 CRF450RX

Boyesen Power Reed Dualstage Polaris 90Cc Hazardous Stretchnet zones on the fullOne 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.