4.0 TFSI Ball Bearing turbo Upgrade

Ball bearing 4.0TFSI turbo upgrade, compatible with all 4.0t Audi engines, s6 s7 rs6 rs7 s8.  Requires a core exchange (send in your old turbos).  We use a GT28/GT30 OR Xona rotor ball bearing cartridge to increase output by over 25% without sacrificing spool.  Core can be any model 4.0T turbocharger. Includes OEM 5axis cnc'd oil and water adapters to preserve stock lines.  GTX28 GTX30.  These are available with genuine Garrett cores or equivalent proven ball bearing cartridges for a discounted price, both carrying the same one year limited warranty.