BOYESEN RAD VALVE 96 YZ250, BLOCK RAD-34C, RAD-34C Seats CB1000 (Non ABS): 2009-15

CB1000 (Non ABS): 2009-15

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YFM 550FWA

Built from advanced

BOYESEN RAD VALVE 96 YZ250, BLOCK RAD-34C, RAD-34C Seats CB1000 (Non ABS): 2009-15Boyesen Rad Valve RAD 34C RAD34C 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