Boyesen Power Reed Dualstage Yamaha Dt250 78-79, Dt400 77-78, Ty250 74-77+84 & 88, Ty350 85-86 Rear Fenders Remove your old oil plug

Remove your old oil plug

UFO Rear Fender (Red) Honda CRF250R 10-13 CRF450 09-12

- ANSI Z87

CRF450L 19-20

Bike Year  Pitch Part Number KX 250 02-05 520 FXFS 23-13  KX 250 02-08 520 FXFS 23-13  KX 250 99-01 520 FXFS 23-14  KXF 450 06-20 520 FXFS 23-13

Boyesen Power Reed Dualstage Yamaha Dt250 78-79, Dt400 77-78, Ty250 74-77+84 & 88, Ty350 85-86 Rear Fenders Remove your old oil 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.