HARD Motorsport OEM Cooling Backing Plates

The E46 design has features our large "Pocket" to allow for more air flow into the proper place you need it the brake hat, so the air will travel through the vents in the rotor. Also the plate is the same size as the rotor to retain a heat shield from your shocks to prevent heating of your shock oil which will change your dampening setting do to thinning the oil, also protect your ball joints from heat and wear.