4040 Brake Proportioning Valve for sale. It makes a great upgrade and restores the correct brake bias when doing a rear disc conversion and/or upgraded front larger calipers/rotors. This came off a '91 non-abs Integra RS. It has the "4040" stamping on it so you know it's the correct one. Make sure to check your application first to make sure it will work.

$35 shipped or $30 pickup from Chicago.

 

Bump it. I know there are guys with BBK's and original prop valve on here.