Boyesen Power Reed Dualstage Yamaha Yz125 03 Swingarm Protectors RFX Pro Engine Timing Plug

RFX Pro Engine Timing Plug (Mineral Grey) Honda CRF250 18-19

45 ventilation slots for maximum cooling

Size: Multi size adjustable: M-XL

KTM 125 SX 23-24

Under and over the jersey fitting

Boyesen Power Reed Dualstage Yamaha Yz125 03 Swingarm Protectors RFX Pro Engine Timing PlugOne 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.