BOYESEN 1999 YZ250 BOY.RAD VALVE RAD-34E Oil & Fuel Filters Harley Davidson FXD Dyna Super

Harley Davidson FXD Dyna Super Glide 1997

By increasing exhaust duration and lift

KTM 525 SX-F 2003-2007

SP400 (1980)

Hook and loop adhesive tape to fix on frameFitment:

BOYESEN 1999 YZ250 BOY.RAD VALVE RAD-34E Oil & Fuel Filters Harley Davidson FXD Dyna SuperBoyesen 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