Boyesen Power Reed Dualstage Yamaha Tdr250, Tzr250 -90 3.5 5/16 inch hex drive head

5/16 inch hex drive head accepts most common driver bits

Made of plastic the Fortress Skid Plates are quitter than metallic protections and have a slim fit to prevent mud

- Oil/Fuel mix gauge on the cap to identify the fuel mix

Alpinestars

Boyesen Power Reed Dualstage Yamaha Tdr250, Tzr250 -90 3.5 5/16 inch hex drive headOne 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.