Boyesen Rad Valve - RAD-34I / RAD34I 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 or plastic inserts required Yamaha YZ250 2000-2004
