Boyesen Rad Valve - RAD-43X / RAD43X

• 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 trimming or plastic inserts required.

Compatible with KTM:

• 1988 KTM 350 Enduro


• 1987 KTM 350 Enduro


• 1990 KTM 350 EXC


• 1989 KTM 350 EXC


• 1990 KTM 350 MX


• 1989 KTM 350 MX


• 1995 KTM 440 EXC


• 1994 KTM 440 EXC


• 1995 KTM 440 MXC


• 1994 KTM 440 MXC


• 1986 KTM 500 MXC


• 1985 KTM 500 MXC


• 1996 KTM 550 MXC


• 1995 KTM 550 MXC


• 1994 KTM 550 MXC


• 1993 KTM 550 MXC