BOYESEN RAD VALVE 03-11 RM125, BLOCK RAD-21J, RAD21J Shopify Collective 2005-2026 125 SX

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BOYESEN RAD VALVE 03-11 RM125, BLOCK RAD-21J, RAD21J Shopify Collective 2005-2026 125 SXBoyesen Rad Valve RAD 21J RAD21J [RAD 21I] 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