Each Boyesen RAD Valve is unique - tailor made to that model, year and displacement.
The intake charge is redirected for more even distribution to the intake ports
Constant flow velocity is maintained for instant throttle response and more horsepower
One piece design and Easy installation

Fitment
1985 Honda CR500R
1986 Honda CR500R
1987 Honda CR500R
1988 Honda CR500R
1998 Honda CR500R
1999 Honda CR500R
2000 Honda CR500R
2001 Honda CR500R
1989 Honda CR500R
1990 Honda CR500R
1991 Honda CR500R
1992 Honda CR500R
1993 Honda CR500R
1994 Honda CR500R
1995 Honda CR500R
1996 Honda CR500R
1997 Honda CR500R
1987 Kawasaki KX500
1988 Kawasaki KX500
1989 Kawasaki KX500
1990 Kawasaki KX500
1991 Kawasaki KX500
1992 Kawasaki KX500
1993 Kawasaki KX500
1994 Kawasaki KX500
1995 Kawasaki KX500
1996 Kawasaki KX500
1997 Kawasaki KX500
1998 Kawasaki KX500
1999 Kawasaki KX500
2000 Kawasaki KX500
2001 Kawasaki KX500
2002 Kawasaki KX500
2003 Kawasaki KX500
2004 Kawasaki KX500