Boyesen Power Reed Dualstage Yamaha Dt250 78-79, Dt400 77-78, Ty250 74-77+84 & 88, Ty350 85-86 Engine Service UFO Radiator Covers (Green) Kawasaki

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Heat reflective inner back panel to keep liquid cool or hot

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Boyesen Power Reed Dualstage Yamaha Dt250 78-79, Dt400 77-78, Ty250 74-77+84 & 88, Ty350 85-86 Engine Service UFO Radiator Covers (Green) KawasakiOne 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.