86-85 CR250R BOYESEN RAD VALVE TRX250R, BLOCK RAD04A, RAD-04A, RAD-04A

Boyesen Rad Valve - RAD-04A / RAD04A

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

CR250R 1984-1985,

ATC250R 1986,

TRX250R FourTrax 1986-1989,

Honda

1986 Honda ATC250R

1985 Honda CR250R

1984 Honda CR250R

1989 Honda TRX250R FourTrax

1988 Honda TRX250R FourTrax

1987 Honda TRX250R FourTrax

1986 Honda TRX250R FourTrax