BOYESEN RAD VALVE 05-19 YZ250, BLOCK RAD-34J Rad Scoops 1 x RK 520XSO2-108 RX-RING

1 x RK 520XSO2-108 RX-RING CHAIN

Has a Leatt protection score of 9 out of 25

Instead of the locknut method

new-school detail

Tall aggressive knobs designed for varying terrain

BOYESEN RAD VALVE 05-19 YZ250, BLOCK RAD-34J Rad Scoops 1 x RK 520XSO2-108 RX-RINGBoyesen Rad Valve RAD 34J RAD34J 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