BOYESEN 1998-99 CR125 BOY.RAD VALVE RAD-01D kits-jersey-nitro well-loved look as if it's

well-loved look as if it's seen countless adventures

Allows inspection and adjustment of ignition timing

Yamaha YZ450FX (2019-2024)

the latest colorway of our iconic design

1992 Yamaha YZ250

BOYESEN 1998-99 CR125 BOY.RAD VALVE RAD-01D kits-jersey-nitro well-loved look as if it'sBoyesen Rad Valve RAD 01D RAD01D 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