OEM, coated replacement rear brake rotor. 255x10 (5/112). 1.75" deep rotor hat (see explanation below). Priced each. Made in Germany.
Note: Following applies to A6 owners only! NOT allroad. Audi A6's in general have 3 different rear rotors that were installed from 1998 and on. You must determine what size and/or rotor hat offset that you have before ordering because that is the only accurate way of ordering the proper rear rotor. Here are the three rotors that are available: