85-89 CR500 BOYESEN RAD VALVE, BLOCK RAD03, RAD-03, RAD03A

Boyesen Rad Valve - RAD-03 / RAD03

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 or plastic inserts required

Honda

1985-1989 Honda CR500R

2001 Honda CR500R

2000 Honda CR500R

1999 Honda CR500R

1998 Honda CR500R

1997 Honda CR500R

1996 Honda CR500R

1995 Honda CR500R

1994 Honda CR500R

1993 Honda CR500R

1992 Honda CR500R

1991 Honda CR500R

1990 Honda CR500R