Hi all. I am just looking at changing the brake pads on a 09 FE450 that I have just purchased and noticed that the rear outside pad has a piece of insulation and a steel sheild between the pad and the caliper piston. None of the other pads have this and the parts listing on line doesnt show it. Should all the pads have this shield or is it something that you get when you buy genuine brake pads. I know my XR400 has it on all pads. Any help will be greatly appreciated.