RB Rear brake big brake install. This is going from the OE 300mm rotor to a 350mm rotor. That’s big!
The kit comes with an adapter bracket to use the OE caliper, OE caliper bracket and OE pads.
The install is straight forward the adapter brackets are label for right and left (as are the rotors by the way).
Because the OE caliper bracket is designed to work with a 300 mm diameter rotor and is now positioned over the 350 mm rotor with the RB adapter bracket ensures proper pad position the OE bracket has light contact with the OD of the rotor. This is remedied by removing 2mm of material from the OE bracket. I discussed this with RB and they can provide this service if the customer doesn’t what to make this modification. All that is required is to remove the tip of material up to the casting line. This was only required on one end.
Other tips: The splash shield does not need to be removed with this rotor however to improve air flow the splash shield can be trimmed away with tin snips or a sheet metal nibbler. If you remove the splash shield all together (it requires removing the hub) the OE caliper mounting bracket will no longer be centered over the rotor. Again the OE caliper bracket can be modified to accommodate this if you choose to go this direction. I recommend to simply trim it away.
The parking brake cable length was fine for the new mounting location of the caliper, but if more cable is required its an easy fix. Remove the cable mount from the lower suspension arm. Once removed the mounting clip can be re-positioned on the cable to provide more slack to reach the caliper.
Everything installed, bleed the brake and bed-in.