Boyesen Power Reed Dualstage Yamaha Rd250/350/400 Cheek Pads Ultra-durable multi-panel 900D construction with

Ultra-durable multi-panel 900D construction with laser-cut perforations for advanced ventilation

The ATV Track Pack 98-piece kit has factory style bolts

350 Fi All

CR500 89-01

Axle holder holds one side so that this can be tightened with one spanner

Boyesen Power Reed Dualstage Yamaha Rd250/350/400 Cheek Pads Ultra-durable multi-panel 900D construction withOne 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.