Boyesen Power Reed Dualstage Honda Cr125 78-92 Yam 250/360/400 - 77 3DF Yamaha YZ85 02-25 rear

Yamaha YZ85 02-25 rear

If you don't need something fully waterproof

Beta RR400 05 rear

PERFORMANCE CHAIN GUIDE

Boyesen Power Reed Dualstage Honda Cr125 78-92 Yam 250/360/400 - 77 3DF Yamaha YZ85 02-25 rearOne 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.