Lost interest in adapting these to the B5 S4.

Front Used cross drilled rotors, mild corrosion from no being run, surface rust, 32.54mm on both. Could be run for a couple thousand more miles on the RS6/RS4 Caliper, or use as is with another caliper.

New old stock 2003 Audi RS6 rear driver rotors. No longer available from the factory.
Two left sided rotors.
Could run these as is, passenger side vanes will be in the opposite direction though.

Part number 4B3615601B
Non-Drilled
Directional