BOYESEN 97-98 YZ250 BOY.RAD.VALVE RAD-34D Tech 10 Supervented - KTM EXC-F 450 2012

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BOYESEN 97-98 YZ250 BOY.RAD.VALVE RAD-34D Tech 10 Supervented - KTM EXC-F 450 2012Boyesen Rad Valve RAD 34D RAD34D Now delivered with carbon fiber reeds for even greater performance gains Maintains flow velocity through the valve and redirects intake charge for more even distribution to the intake ports Sharper, quicker throttle response Added torque improves performance on hills, through corners and over technical jumps Increases horsepower in low , middle and especially the top end ranges One piece aluminum casting, no trimming