Boyesen's Pro Series Reeds are designed with the racer and avid enthusiast in mind. They offer you the latest in carbon reed technology with all the advantages of Boyesens dual-stage design. A carbon fiber top reed is combined with a fiberglass bottom reed for unrivaled performance. The unique, carbon-fiber top reed provides superior response, allowing the reeds to respond quickly and accurately to changes in engine pressure. The fiberglass bottom reed provides durability for increased life over traditional carbon fiber reeds.
Fits: Yamaha YZ250 1990-1996