Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Subzero With a rigid outer frame

With a rigid outer frame

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

AVIATOR 3 SPIN YELLOW/BLUE GLOSS

25X M6 X 20

Xtrig PHDS Rubber Bar Mount Kit M12 (Optional Sizes) Xtrig Clamp Fitment

Boyesen Power Reed Dualstage Yamaha Tdr125, Tzr125 91-4 Subzero With a rigid outer frameOne 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.