BOYESEN RAD VALVE 02 RM125, BLOCK RAD-21H, RAD-21H Keychain AIR VENTILATION SYSTEM

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BOYESEN RAD VALVE 02 RM125, BLOCK RAD-21H, RAD-21H Keychain AIR VENTILATION SYSTEMBoyesen Rad Valve RAD 21H RAD21H 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