STAGE 2 TURBO UPGRADE – S63TU M5 M6 M8 X5M X6MSTAGE 2 TURBO UPGRADE S63TU M5 M6 M8 X5M X6M The RK Autowerks Stage 2 Turbo Upgrade is the perfect solution for those looking for more power while retaining stock drivability and turbo spool. You are still able to use launch control with this setup. To fit the larger turbos, we mill out the stock housings on our 4 axis CNC mill, right in our shop. This retains the bolt on application for easy installation. Currently, you must send your turbos in to be
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