BOYESEN 1999 YZ250 BOY.RAD VALVE RAD-34E Swingarm Protectors Xsr 900 (2016–2025)

Xsr 900 (2016–2025)

and it doesn't remain deformed after an impact

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BOYESEN 1999 YZ250 BOY.RAD VALVE RAD-34E Swingarm Protectors Xsr 900 (2016–2025)Boyesen Rad Valve RAD 34E RAD34E 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