do i need a brake bias valve, for my erst im doin oulton park on the 8th of oct, got cozzy 4x4 rears ,ANY HELP PLEASE

 

If your ERST hav got load compensators on the back they may need to be adjusted if its over breaking on the rear end.

I have 2wd rears on mine bit i havent got the compensators so i had to fit a Wilwood bias valve

 

ok cheers mate