I to believe that the stock pads are sintered as well based on their HH markings.  I have some in the package on the workbench at home. I'll check the packaging for info when I get home tonight.  The rears are actually in retail type packaging not just a plastic bag with a part number.  Hopefully the "fancier" packaging will say something.  The rears cross reference to some CBR's as well so I would think they are not bottom of the barrel. 

Tony 

Never let a motorcycle take you somewhere your brain didn't go five seconds earlier.