BOYESEN 88-91 KX125 BOYESEN RAD VALVE 2.5 Main zipper with double slider

Main zipper with double slider to lock

Triumph - Thruxton 1200 - 2017

ZXR 400 R-RR

ST 80 04-13

GPZ500 (1988-2004)

BOYESEN 88-91 KX125 BOYESEN RAD VALVE 2.5 Main zipper with double sliderBoyesen Rad Valve RAD 11 RAD11 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 aluminium casting, no