BOYESEN Pro Series Reed YZ125 PRO-217

Respond quickly and accurately to piston speed changes for smooth, dependable throttle response, High-tech carbon fiber with all the advantages of Boyesen’s exclusive dual-stage reed design, Offer the quickest acceleration any reed can offer; maximizes horsepower and torque, Replacement reeds are packaged as cylinder sets – One set is required per cylinder, Pair a carbon fiber top reed and a durable fiberglass/epoxy bottom reed, No sacrifice in reed life like traditional carbon fiber reeds