Boyesen Power Reed Dualstage Yamaha Yz125 88-92, Tri-Z 250 85-86 Air Filter Oils & Cleaners Out-riggers with a 45mm Anti-Slip

Out-riggers with a 45mm Anti-Slip coated strap

Neck-brace compatible with mounting straps

non-toxic and biodegradable

YZ125-250X 16-25

Boyesen Power Reed Dualstage Yamaha Yz125 88-92, Tri-Z 250 85-86 Air Filter Oils & Cleaners Out-riggers with a 45mm Anti-SlipOne 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.