If you mean "are Centric rotors refurbished OEM?" The answer is no. Rotors aren't a typcial refurb item; replacment rotors will pretty much always be new.
Over the years, my 06 Ridge has had issues with "warped" rotors. I do lots of city stop and go driving. The Raysbestos brand rotors (they probably all come from 2-3 suppliers in China anyways) that are currently on the truck have lasted the longest. OEM's were acting up at 30k miles.
As to calipers . . .Refurbished calipers are rebuilt OEM ones. That is why there is a core charge. I personally think that you would be wasting your money on new OEM (How much do they want?) You can get refurbed OEM for <$70 per side with core or about $120 with core. I have been contemplating whether they would notice if I sent them my stock Ridgeline caliper back as a core. If you get the "semi loaded" calipers they come with the mounting bracket (which I am pretty sure<but not certain>is needed for swapping the Pilot brakes onto the Ridge). For new OEM the caliper and mounting bracket has got to cost a small fortune.
Have Fun!
