Billet 8-bolt N54 Flexplate

CANformance Billet Steel Crank Adapter – N54 / M5X / S5X Compatibility
 
This precision-machined billet gear steel adapter from CANformance Engineering is designed for serious power and seamless integration between BMW engines and modern automatic gearboxes.
It bolts directly onto your N54 engine to increase torque capacity and drivetrain durability — or can be used to adapt an N55 8HP45 transmission directly to any M50, M52, M54, S50, S52, or S54 engine with the simple addition of a compatible starter adapter.
 
Built from high-strength billet gear steel and engineered for perfect concentricity, this adapter ensures maximum reliability under extreme loads, making it ideal for both street and race applications.
 
Optional Starter Adapters
Gen 1: For use with M5X/S5X-series starter motors
Gen 2: For use with N5X-series starter motors