Factory size and hybrid RS6 RS7 S8 Turbo core upgrade to take your S6 S7 A8 to stage 3 power or simply replace your blown RS6 RS7 S8 chra's. For more power than RS7 OEM turbos, you need to look at the ball bearing upgrade solution listed here http://sillyrabbitmotorsport.com/turbochargers/audi/rs7-turbo-upgrade.
New compressor covers are available starting at $149, avoiding the core exchange process.
CORES ARE NO LONGER REQUIRED! Please choose the option that best suits your needs
* The S6/S7/A8 CHRA size is the OEM cast wheel compressor to replace blown turbos.
* The RS6/RS7/S8 CHRA size is the OEM billet wheel compressor to upgrade from S6/S7/A8 or to the OEM billet wheel spec.
TSB gaskets, screens, checkvalves + misc hardware to correctly reinstall your new 4.0tfsi turbochargers. These parts must be used (or sourced from your local dealer) when replacing blown turbochargers. The defective parts provided by Audi USA are what caused your turbos to fail.
TSB Bare Essentials kit includes: O-rings, Checkvalves, screens and screen cover gasket.