BOYESEN RAD VALVE 05-07 KX250, BLOCK RAD-12J KAWASAKI MX, RAD12J Jersey 2003 - 2026 Yamaha YZ

2003 - 2026 Yamaha YZ 250

Suzuki SV650 2001

Ducati - Monster 1100 S - 2011

Zone compression for better blood circulation

GT 1000 07-10

BOYESEN RAD VALVE 05-07 KX250, BLOCK RAD-12J KAWASAKI MX, RAD12J Jersey 2003 - 2026 Yamaha YZBoyesen Rad Valve RAD 12J RAD12J 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