PRP Ignition Timing Kit Backing Plate - RB20/RB25/RB26/RB30/CA18/1JZ/2JZPlatinum Racing Products ignition timing kit backing plate. Specially designed to work with Platinum Racing Products ignition timing kits, usually used when running the factory timing covers. Will block the hole left when using Platinum Racing Products cam ignition timing kits if you wish to run one. The best looking ignition timing kit on the market will still look fantastic with this little anodized CNC 6061 accessory to compliment your ignition