Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Subzero these lenses are vented for

these lenses are vented for extreme Enduro conditions

25X M6 X 20

AVIATOR 3 SPIN YELLOW/BLUE GLOSS

Beta 250/300 RR 14-18

RFX Pro Rear Axle Adjuster Blocks (Orange) KTM 50 09-19

Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Subzero these lenses are vented forOne 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.