BOYESEN RAD VALVE 94-96 KX250, BLOCK RAD-12A/C KAWASKAI MX, RAD12A X-Frame CRF250R   2004-2009

CRF250R   2004-2009

FC 250/350/450 14-15

spindle nut and loosen spindle pinch bolts

1 Vox Aperture Jersey White/Orange

2008 Yamaha YZ250

BOYESEN RAD VALVE 94-96 KX250, BLOCK RAD-12A/C KAWASKAI MX, RAD12A X-Frame CRF250R   2004-2009Boyesen Rad Valve RAD 12A RAD12A 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